Search

[Display omitted] • Ga atom with different coordination environments CN3, CN4 and CN5 were constructed on the Pd(1 1 1). • The reaction mechanism and selectivity for conversion of CO 2 to methanol (CTM) were systematic investigated. • The relationship between the reaction activity and coordination environments of Ga was revealed. • The potential importance of the 4-coordinated Ga atom was proposed for CTM. Methanol is easy to store compared to other gaseous hydrogenation products. Moreover, it can be further converted to other advanced hydrocarbons, so the conversion of CO 2 to methanol (CTM) is a promising reaction. PdGa bimetallic catalysts are candidate catalysts for CTM conversion, which can promote H spillover to the active site and react with adsorbed CO 2. However, the role of Ga atom in PdGa bimetallic catalysts and the underlying mechanism of CTM are still unclear at the molecular level. In this work, Ga atom with different coordination environments CN3, CN4 and CN5 were obtained on the Pd(1 1 1), and three reaction mechanisms of CTM on different catalysts are systematic investigated. Changes in the coordination environments of the Ga atom affected the adsorption configurations of HCOOH*, HCO*, and H 2 CO*, among others. Three catalysts have similar superior pathways, and the order of CO 2 reactivity is CN4 > CN3 > CN5. The PdGa bimetallic catalysts containing 4-coordinated Ga atom are proposed to be the ideal catalysts. We hope that the conclusions obtained can help understand the reasons for the outstanding reactivity and selectivity of CTM on PdGa bimetallic catalysts at the molecular level, and can provide some guidance for the design and development of high-performance bimetallic catalysts. [ABSTRACT FROM AUTHOR]

As laser technology advances, the importance of laser protection puts an urgent demand for robust and high-efficient optical limiting materials. In this work, CsPbX 3 (X = Cl/Br, Br) NCs were synthesized by precisely controlling the ratio of Cl− to Br− and the heat treatment temperature, and the third-order nonlinear (TONL) optical properties of them were investigated systematically and deeply based on a nonlinear optical imaging technique with the phase-object (NIT-PO) at 532 nm for the first time. All of them demonstrate strong reverse saturation absorption (∼10-12–10-11 m/W), and the sign of TONL refraction index (γ) relates to the component (CsPb(Cl/Br) 3 NCs glasses: ∼10-20 m2/W, CsPbBr 3 NCs glasses: ∼−10-20 to 10-19 m2/W). In addition, they have excellent characteristics of thermal stability and water stability, as well as photostability under 455 nm laser irradiation, indicating that it is a promising optical limiting material. [ABSTRACT FROM AUTHOR]

Copper (Cu) and iron (Fe), the enzymatic cofactors required for various biochemical processes, have been recently linked to lipid metabolism. Adipose tissues play central roles in energy balance and whether copper and iron homeostasis is involved in cold-stimulated energy metabolism remains unknown. In this study, the Cu and Fe contents in interscapular brown adipose tissue (BAT) and subcutaneous white adipose tissue (subWAT) from mice at different developmental stages were measured. Our results revealed the dynamic changes of Cu and Fe levels during development, suggesting their potential roles in energy homeostasis. Furthermore, the significantly increased Cu and Fe contents and the markedly up-regulated CTR1 and ATP7A expression in acute cold-stimulated BAT indicates the involvement of both Cu and Fe in the BAT-mediated thermogenesis. Comparably, no change in the Cu and Fe levels in cold-stimulated subWAT was observed at the indicated time points, suggesting that both metals are not involved in the cellular process of cold-induced WAT browning. Taken together, these data demonstrate the induction of Cu and Fe in acute cold-stimulated BAT activation, thus providing the direct evidences of the involvement of copper and iron homeostasis in BAT-mediated non-shivering energy metabolism. [ABSTRACT FROM AUTHOR]

The titanate, is a material of interest for various energy applications, including photovoltaics, catalysts, and high-rate energy storage devices. Herein, its related materials, CuO/CaTi 4 O 9 [CCTO] thin films, were successfully fabricated on SrTiO 3 (100) substrates by RF magnetron sputtering assisted with subsequent oxygen annealing. This obtained CCTO thin films were then systemically studied by X-ray powder diffraction (XRD), atomic force microscopy (AFM), scan electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HRTEM). It was found that CuO and CaTi 4 O 9 (001) particles were closely accumulated together on the surface of the substrate in the annealing process after comparing with that of the as-prepared thin film, which was verified by SEM and AFM results. Furthermore, we investigated the third-order nonlinear optical (NLO) properties of the as-prepared and annealed CCTO thin film by means of the Z-scan technique using 650 nm femtosecond laser pulse. Post-deposition oxygen annealing was found to modify the morphological characteristics of the films, resulting in enhancing their NLO properties. The observation of NLO performance of annealed CCTO thin film indicates that RF magnetron sputtering is a feasible method for the fabrication of optical thin films, which can be expanded to fabricate other NLO materials from the corresponding dispersions. Naturally, we concluded that the CCTO thin film occupy a better NLO property, and thus enlarge its application in nonlinear optics. [ABSTRACT FROM AUTHOR]

Currently, phosphor-in-glass (PiG) approach draws great attention because of its excellent thermal resistance and facile process in WLED fabrication. However, the red light deficiency results in high correlated color temperature (CCT) and low color rendering index (CRI) in white light-emitting diode (WLED). Herein, a new LuAG:Ce 3+ phosphor-in-glass (Lu-PiG) combining with the CaAlSiN 3 :Eu 2+ red phosphor layer was synthesized by the low temperature co-sintering and screen-printing techniques, which was experimentally demonstrated to replace the conventional polymer-based phosphor converter and realized the chromaticity tuning for LuAG:Ce 3+ phosphor with WLED. The Lu-PiG constructed WLED exhibited excellent thermal stability, but it still showed a typical cold white light resulting from the absence of red light component. Therefore, a stacking geometric configuration by screen-printing a red phosphor layer on the Lu-PiG substrate (R&Lu-PiG) was designed to solve red deficiency problem. The R&Lu-PiG color converter showed an excellent thermal stability with only 8.2% emission loss compared to the Lu-PiG when elevating temperature from 303 K to 433 K. By adjusting the CaAlSiN 3 :Eu 2+ phosphor content in the layer, we obtained a high-performance warm WLED with a luminous efficacy of 102.1 lm/W, a CCT of 3410 K and a CRI of 76.5 under 20 mA current driving. Thus, it is expected that this developed R&Lu-PiG color converters could have large potential applications in high-power warm WLED. [ABSTRACT FROM AUTHOR]

Currently, phosphor-in-glass (PiG) approach draws great attention because of its excellent thermal resistance and facile process in w-LED fabrication. However, the absence of red emissive component results in poor chromaticity quality, which greatly restricts its application in the high-quality indoor lighting. In the present work, a transparent garnet-based PiG was successfully prepared by introducing the Y 3 Al 4.5 Ga 0.5 O 12 :Ce 3+ (YAGG) green phosphor into TeO 2 -based glass matrix, and we demonstrated the possibility offered by the screen-printing technique for warm w-LED applications by coupling the PiG plate stacked with a red phosphor coating on commercial InGaN LED. The microstructures and luminescent properties of them were investigated in detail. After simply varying the red phosphor concentration as well as the YAGG PiG thickness, a facile chromaticity tuning for the thus-fabricated LED was achieved in the range changing from cool white to warm white. Moreover, this developed luminescent material presented an excellent heat-resistance performance. Hopefully, the red phosphor coated PiG color converter is applicable in the long-lifetime high-power color-tunable w-LEDs. [ABSTRACT FROM AUTHOR]

A pivotal step in providing a better fluorescent material that has high luminous efficacy and excellent thermal stability is to utilize inexpensive phosphors for white light-emitting diodes (W-LEDs). Herein, we demonstrate a feasible tape-casting technique for creating phosphor thick films that consist of Ce: YAG phosphor embedded in relatively low melting point glass frits on an ultrathin glass substrate with controllable film thickness. The glass matrix has ideal densification and interfaces with the glass substrate at a relatively low temperature of 580 °C. Subsequently, the structure and optical properties of the phosphor layer are investigated. In addition, the effect of the phosphor concentration, thick film thickness and location (top or bottom) of the phosphor layer on the photoluminescence properties and chromaticity are also discussed with respect to use in W-LEDs. Significantly, this promising structure has excellent thermal stability and the potential to overcome current limitations of phosphors in high-power W-LEDs. Finally, a high-performance W-LED based on the planar phosphor glass exhibits a luminous efficiency of 108.45 lm W −1 , a correlated color temperature of 5408 K and a color rendering index of 76. [ABSTRACT FROM AUTHOR]

In this work, a novel environmentally friendly strategy toward phosphor-converted WLED employing Ce:YAG-doped glass via single-step low-temperature co-sintering technology was successfully synthesized, using low-cost PbO–B 2 O 3 –SiO 2 –ZnO glass as host, which showed good sintering behavior and high visible transparency under the sintering condition of 750 °C without noticeable interaction with phosphors. By simply changing thermal condition, phosphor doped concentration and specimen thickness for the viscous sintering of phosphor in glass (PiG), optical characterization of WLED can be easily tuned. As a result, it can be found that the ideal thermal condition is sintered at 700 °C for 40 min, the optimal amount of phosphor powder is controlled to be 5 wt% of the final mixture, and the best suitable thickness of specimens is 0.8 mm. The constructed PiG based WLED exhibits a high luminous efficiency of 134.33 lm/W, and a correlated color temperature of 4696 K as well as a color rendering index of 68.5. Enhanced thermal quenching property of PiG compared to phosphor with conventional silicone resin reveals the prominent feasibility of the present glass ceramic material in WLED application. [ABSTRACT FROM AUTHOR]

Simple Summary: The integration of artificial intelligence (AI) into radiomic models has become increasingly popular due to advances in computer-aided diagnosis tools. These tools utilize statistical and machine learning methods to evaluate various medical image analysis modalities. In the case of prostate cancer, there are multiple areas in the radiomics pipeline that can be improved. This article explores the latest developments in mpMRI for PCa and examines the radiomic flowchart, as well as the fusion of traditional medical imaging with AI to overcome challenges and limitations in clinical applications. Furthermore, it addresses challenges related to radiomics, radiogenomics, and multi-omics in prostate cancer and suggests the necessary critical steps for clinical validation. The use of multiparametric magnetic resonance imaging (mpMRI) has become a common technique used in guiding biopsy and developing treatment plans for prostate lesions. While this technique is effective, non-invasive methods such as radiomics have gained popularity for extracting imaging features to develop predictive models for clinical tasks. The aim is to minimize invasive processes for improved management of prostate cancer (PCa). This study reviews recent research progress in MRI-based radiomics for PCa, including the radiomics pipeline and potential factors affecting personalized diagnosis. The integration of artificial intelligence (AI) with medical imaging is also discussed, in line with the development trend of radiogenomics and multi-omics. The survey highlights the need for more data from multiple institutions to avoid bias and generalize the predictive model. The AI-based radiomics model is considered a promising clinical tool with good prospects for application. [ABSTRACT FROM AUTHOR]

Transparent Ce: Y 3 Al 5 O 12 glass ceramics were successfully fabricated via spontaneous crystallization of a Ce 3+ -doped PbO–SiO 2 –Al 2 O 3 –Y 2 O 3 –B 2 O 3 glass during melt-quenching. The transparency of the samples was improved with increasing the Pb/Si atomic ratio. With the increase of Ce 3+ content, the emission peak shifted towards the long wavelength and the luminous efficacy was gradually enhanced. Such glass ceramic-based white-light-emitting diode yielded a luminous efficacy of 97 lm/W, a correlated color temperature of 5561 K and a color rendering index of 69.3. [ABSTRACT FROM AUTHOR]

A general and facile chemical synthesis approach has been established for the successful doping of monodisperse semiconducting In 2 O 3 nanocrystals inside a porous transparent silica glassy matrix. The preparation of silica glassy matrix loaded with specific In 2 O 3 precursors is performed by using the sol–gel method. Then, the samples are sintered by using atmosphere control methods to generate the In 2 O 3 nanocrystals growth inside the deep volume of the silica matrix. The resulting In 2 O 3 nanocrystals are characterized by X-ray powder diffraction, energy dispersive X-ray spectrum and transmission electron microscopy. Photocatalytic activity of the as-prepared products is also measured, and the result shows that the photodegradation efficiency of silica glassy matrix has been significantly improved by doping In 2 O 3 nanocrystals. [ABSTRACT FROM AUTHOR]

To prepare pearlyescent pigment of micron glass/nano-FeO by co-precipitation method, the micron dimension glass as substrate must be eroded by sodium hydroxide solution and hydrofluoric acid for appropriate time so as to obtain more 'growing points' for 'crystal seed point' of FeO. The effects of eroding time of sodium hydroxide solution, eroding time of hydrofluoric acid and the reaction temperature on coating layer of micron glass/nano-FeO were investigated. The results showed when the micro glass as a substrate would be eroded by 0.5 mol/L sodium hydroxide solution for 20 min and then by 0.1 mol/L hydrofluoric acid for 8 min, the FeO coated layer displays uniform tightly packed nano-scales granular shape, the particle size can be estimated ≈30 nm. The samples were characterized by XRD, HRSEM, XPS, VSM, FT-IR and color measurement. [ABSTRACT FROM AUTHOR]

Inorganic perovskite nanocrystals exhibit tremendous prospects in optoelectronics. Although the stability of perovskite nanocrystals is considerably improved after being embedded in a glass matrix, subtle difference in the glass composition is still an important factor affecting the glass matrix and perovskite precipitation behavior. In this study, a series of CsPbCl 2 Br 1 nanocrystal glasses with excellent optical properties were prepared by optimizing the composition. Further, we introduced Sm3+ into CsPbCl 2 Br 1 perovskite nanocrystal glass (PNG) to enhance photoluminescence (PL) emissions and improve the ultraviolet response and device stability of silicon photodetectors (Si PDs). After integrating the as-prepared Sm3+-doped CsPbCl 2 Br 1 PNG with Si PDs, the UV response of the Si PDs at 200–400 nm was significantly enhanced. In particular, the responsivity of Sm3+-doped CsPbCl 2 Br 1 PNG-coated Si PDs at 320 nm reaches 7.5 times that of bare Si PDs. Furthermore, Sm3+-doped CsPbCl 2 Br 1 PNG-coated Si PDs displayed good photocurrent stability, with a decrease of only 1.5% after 60 days of operation. Additionally, after integrating 10% Sm3+-doped CsPbCl 2 Br 1 PNG with InGaAs PDs, a broadband response in the ultraviolet to the infrared region is successfully achieved. This study attempts to fabricate perovskite nanocrystal glasses and provides a new perspective for next-generation high-performance UV PDs. [ABSTRACT FROM AUTHOR]

Well dispersed FeO nanoparticles were synthesized at 180°C by sol-vothermal method, using iron (III) acetylacetonate as iron source and poly-vinilpyrrolidone (PVP) as special surfactant. The factors affecting reaction system, such as reaction temperature and time, the amount of iron source and surfactant are discussed. The synthesized FeO particles show excellent saturation magnetization and super-paramagnetic properties, demonstrating their potential applicability in magnetic nanodevices and bio-medicine. [ABSTRACT FROM AUTHOR]

Experiments on preparation of mica/FeO pearlescent pigment were performed to discuss influences of several crucial parameters on final products. The samples were characterized by XRD, HRSEM, FTIR and color measurement, the content of FeO on the mica surface was also analyzed by XPS. It was found that the smoothness, compactness and colour deepness of the coating were influenced by different pH values and temperatures. The optimum preparation parameters of mica/FeO pearlescent pigment were obtained: the value of pH ≥ 9.2; the concentration of sodium hydroxide was 0.5 mol/l; the concentration ratio of Fe to Fe was 1.6 : 1; the velocity of magnetic stirring was 138 ≤ v ≤ 151 r/min; reaction temperature was 70-80°C; calcination temperature was 350°C and calcination time was 3 h. [ABSTRACT FROM AUTHOR]

Abstract: CuIn1−x Ga x S2 (x =0.5) flowers consisting of nanoflakes were successfully prepared by a biomolecule-assisted solvothermal route at 220°C for 10h, employing copper chloride, gallium chloride, indium chloride and l-cysteine as precursors. The biomolecule l-cysteine acting as sulfur source was found to play a very important role in the formation of the final product. The diameter of the CuIn0.5Ga0.5S2 flowers was 1–2μm, and the thickness of the flakes was about 15nm. The obtained products were characterized by X-ray diffraction (XRD), energy dispersion spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction spectroscopy (SAED), and UV–vis absorption spectroscopy. The influences of the reaction temperature, reaction time, sulfur source and the molar ratio of Cu-to-l-cysteine (reactants) on the formation of the target compound were investigated. The formation mechanism of the CuIn0.5Ga0.5S2 flowers consisting of flakes was discussed. [Copyright &y& Elsevier]

Pure nano-Fe3O4 and cobalt-doped nano-Fe3O4 particles are successfully synthesized by co-precipitation method using tetramethylammonium hydroxide (TMAOH) as alkali. Several key factors that may affect preparation are carefully discussed such as alkali concentration, alkali dosage, reaction temperature, iron salt solution concentration and dispersant agents. Such nano-Fe3O4 particles prepared have good dispersibility and a very narrow size distribution with the average diameter about 38 nm, which are proved to be cubic spinel Fe3O4 crystal by XRD pattern. It is also found that the addition of PEG-4000 surfactant can improve the dispersibility of nanoparticles. In our work, effects of cobalt dopant concentration on magnetic properties of cobalt-doped nano-Fe3O4 are also discussed. The result shows that the coercivity of cobalt-doped nanoparticles changes greatly with the variation of cobalt dopant concentration. The maximum coercivity reaches as high as 1628 Oe, which is very meaningful for preparation of materials with high coercivity. [ABSTRACT FROM AUTHOR]

In this article, a two-step microemulsion method to prepare nano-Fe3O4 particles was adopted. Several factors including molar ratio of water to NP-5 (R), alkali concentration, temperature, initial total iron concentration, and aging time that may affect morphology and size of the nanoparticles were discussed. It was found that such prepared nanomagnetite particles have uniform size and good morphology with R being 6.0, alkali concentration being 2.5 mol/L, temperature at 30°C and initial total iron concentration being controlled at 1.75 mol/L. The Ostwald ripening and long aging time can induce formation of cubic Fe3O4 nanocrystalline with 100-400 nm. The crystal structure of synthesized nanoparticles was found to belong to the cubic system by selected-area electron diffraction (SAED) and indexing the x-ray diffraction (XRD) pattern. [ABSTRACT FROM AUTHOR]

• Low toxicity Ca2+ was successfully incorporated into CsPbBr 3 and CsPbBr 1 I 2 NCs. • The PLQY of 40% Ca2+-CsPbBr 3 and 40% Ca2+-CsPbBr 1 I 2 NCs can reach 72.3% and 78.7%. • Ca2+ doping inhibits the non-radiative recombination rate of NCs. • Ca2+ doped NCs encapsulated in superhydrophobic aerogels have excellent stability. • The red-emitting CCPBI@AG-4 makes the CRI of the WLED as high as 92.2. All-inorganic halide perovskite nanocrystals (NCs) have become the most promising next generation luminescent materials due to their excellent properties. However, there are many nonradiative recombination defects in colloidal perovskite NCs, which reduce their luminescent efficiency and stability. In this work, we incorporated the alkaline-earth (AE) metal ion Ca2+ into NCs to further improve the photoluminescence quantum yield (PLQY) of CsPbBr 3 and CsPbBr 1 I 2 NCs. The PLQY of green-emitting CsPbBr 3 and red-emitting CsPbBr 1 I 2 NCs can be boosted to 72.3% and 78.7%, respectively by doping the optimum amount of Ca2+. At the same time, we adopted a simple and low-cost one-pot method to integrate Ca2+-CsPbX 3 (X 3 = Br 3 , Br 1 I 2) NCs and superhydrophobic silica aerogels (AG), not only retaining the high PLQY of NCs, but also greatly improving the water, heat and light stability. Finally, the green-emitting Ca2+-CsPbBr 3 @AG, red-emitting Ca2+-CsPbBr 1 I 2 @AG composites and the blue chip as the light sources show a wide color gamut that accounts for 129% of the NTCS 1953 value and nearly 100% of the Rec.2020 value. Additionally, we fabricated white light-emitting diode (WLED) devices by coupling Ca2+-CsPbBr 1 I 2 @AG composites with commercial YAG:Ce3+ phosphors on blue chips, obtaining bright white light with a color rendering index (CRI) up to 92.2. [ABSTRACT FROM AUTHOR]

Abstract: A series of Er3+/Yb3+-co-doped 60Bi2O3–(40−x) B2O3 –xGa2O3 (BBGA x=0, 4, 8, 12, 16mol%) glasses have been prepared. The absorption spectra, emission spectra, fluorescence lifetime of Er3+:4I13/2 level and thermal stability were measured and investigated. Three Judd–Ofelt intensity parameters Ωt (t=2,4,6) (Ω 2=(4.67–5.93)×10−20 cm2, Ω 4=(1.50–1.81)×10−20 cm2, Ω 6=(0.92–1.17)×10−20 cm2) of Er3+ ions were calculated by Judd–Ofelt theory. It is found that the Ω 6 first increases with the increase of Ga2O3 content from 0 to 8mol% and then decreases, which is mainly affected by the number of non-bridging oxygen ions of the glass network. The high peak of stimulated emission cross-section () of Er3+: 4I13/2→4I15/2 transition were obtained according to McCumber theory and broad full width at half maximum (FWHM=69–76nm) of the 4I13/2→4I15/2 transition of Er3+ ions were measured. The results indicate that these new BBGA glasses can be used as a candidate host material for potential broadband optical amplifiers. [Copyright &y& Elsevier]

All‐inorganic perovskite quantum dots (PQDs) are widely applied in photoelectronics because of their high luminous efficiency. However, PQDs have poor stability, which hinders their practical applications. In this study, controllable crystallization of PQDs is achieved by adding Al2O3 to alter the glass network. Next, Na2CO3 (aq) washing‐heating treatment is used to improve the protective mechanism. Owing to this dual strategy, the prepared CsPbBr3@glass exhibits a high photoluminescence quantum yield (PLQY > 95%) and excellent stability. In a 1000 h accelerated aging experiment, the luminous intensity remains above 96% of the initial intensity. The luminescence intensity shows almost no change after soaking in water for 20 weeks. Finally, the CsPbBr3@CsPbBr1I2@PET light‐conversion film is prepared by the sandwich method. Its color gamut covers 138% of the NTSC 1953 and 102% of the Rec. 2020. This CsPbBr3@glass with a high PLQY and ultrastability will broaden the scope of perovskite materials in displays. [ABSTRACT FROM AUTHOR]

Nowdays, the demand for high-power laser lighting applications is on the rise, however, phosphor in glass (PiG) prepared using conventional glass systems often experience damage under intense laser irradiation. To tackle this issue, we introduce a novel LAS glass system for phosphor encapsulation to create PiG, and by utilizing a spray coating technique, we blend PiG with high thermal conductivity sapphire to obtain phosphor in glass film (PiF), effectively improving laser irradiation resilience and optical characteristics. In this study, a novel LAS glass system (SiO 2 –Li 2 CO 3 –MgO–Al 2 O 3 –CaO–P 2 O 5 –K 2 O–ZrO 2 –Na 2 O) was utilized to encapsulate Ce:GdYAG phosphors to prepare a series of PiG and PiF. The glass system exhibits multi-directional interlocking lithium disilicate crystals, significantly enhancing the glass's strength and fracture toughness. There is no apparent interface reaction between the glass system and the phosphors, indicating effective protection of the phosphor particles. The PiF sample demonstrates a minor decrease of 5.2 % in internal quantum efficiency compared to the original phosphor, while boasting a high thermal conductivity of 7.4 W m−1 K−1. Notably, the optimized PiF shows remarkable enhancements with a saturation threshold of 4.37 W mm−2, surpassing PiG (1.668 W mm−2), and achieving LF max of 424.41 lm and LE max of 147.16 lm W−1. It features a high color rendering index (CRI) of 68.7 and low color correlated temperature (CCT) of 3646 K, significantly improving laser irradiation resistance and optical quality, making it a promising warm yellow laser illumination converter for diverse lighting applications. [ABSTRACT FROM AUTHOR]

Perovskite quantum dots can form various forms such as nanowires, nanorods, and nanosheets through self‐assembly. Nanoscale self‐assembly can be used to fabricate materials with excellent device properties. This study introduces AuBr3 into CsPb(Br/I)3 quantum dots, causing them to assemble into nanowires. The nanowires form because part of Au3+ is surface‐doped to replace Pb2+, and the [PbX6]4− octahedral structure is distorted. The symmetry of the structural surface is broken, and a dipole‐moment‐induced field is generated, thus promoting self‐assembly. Moreover, the presence of Au nanoparticles (NPs) causes a localized surface plasmon resonance and generates strong van der Waals forces that promote self‐assembly. Finally, to test other applications of perovskite nanowires, the solution method is used to prepare films by compounding the sample solution and polystyrene (PS) for backlighted displays. [ABSTRACT FROM AUTHOR]

In laser illumination, there is considerable interest in phosphor‐converted laser diodes that boast high efficiency and exceptional thermal stability. Phosphor‐in‐glass (PiG) and phosphor‐in‐glass film (PiF) are highly favored for their efficiency, cost‐effectiveness, and ease of fabrication. To tackle the issue of low thermal conductivity of glass, a novel lithium–aluminum–silicate glass is innovatively developed. This glass induces the precipitation of spodumene crystalline phase, enhancing material stability. Utilizing solid‐state sintering techniques, Y3Al3.5Ga1.5O12:Ce3+ (YAGG:Ce) PiG is fabricated, which exhibited a luminous flux (LF) of 866.76 lm under 450 nm blue light with 3.88 W input power. Benefiting from the high thermal conductivity of sapphire substrate and the high‐intensity glass system, YAGG:Ce PiF demonstrated a saturation threshold of 10.20 W, yielding an impressive LF of 2178.1 lm, which is 2.5 times that of PiG samples. Notably, the thermal conductivity increased significantly from 2.2 W m−1K−1 (PiG) to 7.0 W m−1K−1 (PiF), surpassing traditional organic resin materials. To validate the practicality of the two‐color converters, it integrates them into both starlight lamp and laser flashlight modules for encapsulation, thereby generating attractive green light in various environments. This design holds the potential to become the ideal choice for the next generation of high‐power, high‐brightness laser illumination. [ABSTRACT FROM AUTHOR]

Phosphors in glass films (PiFs) is considered ideal conversion materials for laser lighting, but heat dissipation issue is the main challenge limiting its development. Therefore, it is urgent to find more excellent heat dissipation materials. Herein, we proposed to use AlN with high thermal conductivity as the substrate, and innovatively introduced TiO 2 coating to improve the interface reflection ability and solve the possible problems of shedding and cracking. After a series of optimizations, the LSN PiG-TiO 2 -AlN (PTA) color converter obtained a high thermal conductivity of 29W m−1k−1 and a low surface temperature. At an input power of 5.2W, the luminous efficiency can reach 175 lm/W and the relative initial intensity can still be maintained by 95.3% at 200 °C. Benefiting from the extremely strong heat dissipation capacity of the AlN substrate, the LSN PTA color converter maintains its relative luminous intensity at 95 % of the initial intensity after 24 h of continuous illumination, which is the best value recorded so far. In addition, LSN PTA is combined with CaAlSiN 3 :Eu2+ phosphor to achieve high-quality white light with a CRI of 82.5. The above results indicate that LSN PiG-TiO 2 -AlN color converters have a promising research prospect in the field of laser lighting. [ABSTRACT FROM AUTHOR]

As a promising optoelectronic material, all-inorganic perovskite nanocrystals (NCs) have attracted much attention, but there are few studies on zero-dimensional Cs4PbBr6 perovskite NCs. Herein, the in situ growth of the CsPbBr3/Cs4PbBr6 NCs inside amorphous glass has been achieved by adjusting the ratios of Cs2CO3 and PbBr2. The effect of different proportions with raw materials on the phase, microstructure, and photoluminescence (PL) characteristics was discussed in detail. Moreover, CsPbBr3/Cs4PbBr6 NCs glass with high photoluminescence quantum yield (PLQY) of ∼58.9% was obtained by optimizing the heat treatment condition. In particular, CsPbBr3/Cs4PbBr6 NCs glass realizes low-threshold amplified spontaneous emission (ASE) at room temperature. Meanwhile, as a green light source, CsPbBr3/Cs4PbBr6 NCs glass makes white light-emitting diode (WLED) presents a wide color gamut. Importantly, CsPbBr3/Cs4PbBr6 NCs glass displays excellent water/thermal stability. All these results prove that CsPbBr3/Cs4PbBr6 NCs glass has broad application prospects in the field of lasers and backlight displays. [ABSTRACT FROM AUTHOR]

Beige adipose tissue has been considered to have potential applications in combating obesity and its related metabolic diseases. However, the mechanisms of acute cold-stimulated beige formation still remain largely unknown. Here, transcriptional analysis of acute cold-stimulated (4 °C for 4 h) subcutaneous white adipose tissue (sWAT) was conducted to determine the molecular signatures that might be involved in beige formation. Histological analysis confirmed the appearance of beige adipocytes in acute cold-treated sWAT. The RNA-sequencing data revealed that 714 genes were differentially expressed (p-value < 0.05 and fold change > 2), in which 221 genes were upregulated and 493 genes were downregulated. Gene Ontology (GO) analyses showed that the upregulated genes were enriched in the GO terms related to lipid metabolic process, fatty acid metabolic process, lipid oxidation, fatty acid oxidation, etc. In contrast, downregulated genes were assigned the GO terms of regulation of immune response, regulation of response to stimulus, defense response, etc. The expressions of some browning candidate genes were validated in cold-treated sWAT and 3T3-L1 cell browning differentiation. In summary, our results illustrated the transcriptional response of sWAT to acute cold exposure and identified the genes, including Acad11, Cyp2e1, Plin5, and Pdk2, involved in beige adipocyte formation in mice. [ABSTRACT FROM AUTHOR]

Dichromatic phosphor-in-glass films (PiFs) are recognized as ideal color converters for high-quality laser lighting, but photon reabsorption among multiple phosphor degrades the luminescence performance. Therefore, there is urgent to design a suitable PiF structure to alleviate this problem. Herein, the green-emitting phosphor YAGG:Ce and the orange-yellow-emitting phosphor GdYAG:Ce are mixed with silicate glass powder respectively, and print on the sapphire plate with high thermal conductivity (TC) to prepare spatially separated structure PiF (SS-YG PiF). Under the excitation of blue LD with power of 6.15 W, the luminous flux (LF) of SS-YG PiF reaches 1020.4 lm, and the corresponding luminous efficiency (LE) reaches 165.92 lm/W and CRI∼80. Notably, the perfect white light color coordinates (0.3354, 0.3253) are obtained at 6.15 W. In addition, SS-YG PiF has a lower surface temperature and a higher TC (9.89 W m−1K−1), reflecting the excellent luminescence performance and thermal properties of SS-YG PiF. [ABSTRACT FROM AUTHOR]

Dichromatic phosphor-in-glass films (PiFs) are recognized as ideal color converters for high-quality laser lighting, but photon reabsorption among multiple phosphor degrades the luminescence performance. Therefore, there is urgent to design a suitable PiF structure to alleviate this problem. Herein, the green-emitting phosphor YAGG:Ce and the orange-yellow-emitting phosphor GdYAG:Ce are mixed with silicate glass powder respectively, and print on the sapphire plate with high thermal conductivity (TC) to prepare spatially separated structure PiF (SS-YG PiF). Under the excitation of blue LD with power of 6.15 W, the luminous flux (LF) of SS-YG PiF reaches 1020.4 lm, and the corresponding luminous efficiency (LE) reaches 165.92 lm/W and CRI∼80. Notably, the perfect white light color coordinates (0.3354, 0.3253) are obtained at 6.15 W. In addition, SS-YG PiF has a lower surface temperature and a higher TC (9.89 W m−1K−1), reflecting the excellent luminescence performance and thermal properties of SS-YG PiF. [ABSTRACT FROM AUTHOR]

Phosphor-in-glass (PiG) plays an indispensable role as a highly tunable and easily prepared phosphor material for new-generation high-brightness and high-collimation laser lighting (blue laser diodes + colour converters). However, at low power (<5 W), the poor thermal stability and brittleness of PiGs make it challenging to develop high-intensity, high-brightness PiG materials because of their susceptibility to rupture and sudden drop in luminous efficiency (LE) owing to thermal accumulation under high-energy laser irradiation. In this study, a performance-tunable lithium-aluminium-silicate (LAS) glass system was used to adjust the glass composition and synthesise LAS-glasses that can be sintered at low temperatures. In addition to LuAG: Ce phosphor, LuAG: Ce phosphor-in-LAS (LuAG: Ce-PiGLAS) has been successfully developed, which can withstand an 8.24-W laser irradiation without heat dissipation, achieving a luminous flux of 1248 lm and LE of 204 lm/W. Furthermore, a pre-thermal treatment was used to precipitate the lithium disilicate phase to enhance the resistance of the glass to laser ablation, resulting in a power increase to 8.62 W at 1485 lm and maximum LE increase to 212 lm/W with a 2.5% attenuation at 498 K. High-brightness illumination performance was demonstrated in both transmission and reflection modules. This study is anticipated to generate new prospects for PiG applications and accelerate the development of laser lighting. [ABSTRACT FROM AUTHOR]

Organic–inorganic manganese halide with environmentally friendly properties has become a new candidate material for backlight display applications. In this article, tetraethylammonium bromide (C8H20N)2MnBr4 is synthesized by a simple room temperature evaporation method. The tetrahedral coordinated Mn2+ demonstrates a green emission peak at 523 nm and a commendable photoluminescence quantum yield (PLQY) of 81.7%. To improve its stability, different proportions of Zn2+ are incorporated, leading to the discovery of (C8H20N)2Mn0.95Zn0.05Br4 as the most stable variant with a high PLQY of 84.3%. Additionally, by utilizing a sandwich method and double‐layer polyethylene terephthalate (PET) film encapsulation, the powder‐to‐binder ratio and thickness gradient are optimized, resulting in the ideal (C8H20N)2Mn0.95Zn0.05Br4@PET film with a powder‐to‐binder ratio of 1:2 and a thickness of 0.5 mm. Remarkably, the film exhibits superior stability against water, heat, and photo degradation. Finally, the light conversion film prepared from (C8H20N)2Mn0.95Zn0.05Br4@K2SiF6: Mn4+@PET composite material is applied to backlight display, and the color gamut covers 112% of NTSC 1953 and 83% of Rec. 2020. This study provides a feasible route for developing environmentally friendly, low‐cost, and high‐performance liquid crystal displays. [ABSTRACT FROM AUTHOR]

Lu3Al5O12:Ce (LuAG:Ce) phosphor has been designed and fabricated into various forms of green fluorescent converters and plays a critical role in the field of solid‐state laser lighting. Phosphor in glass (PiG) and phosphor in glass film (PiGF) are expected to be viable strategies for high‐power and high‐brightness laser diode (LD) illumination due to their easy synthesis and low cost. In this study, LuAG:Ce‐PiG with an internal quantum efficiency of 90.5% is prepared by investigating the sintering conditions and combining with a borosilicate glass. It possesses a luminous flux (LF) of 584 lm and luminous efficiency (LE) of 225 lm W−1 @ 20 W mm−2. On this basis, LuAG:Ce‐PiG sapphire film (LuAG:Ce‐PiGSF) with high thermal conduction (10.26 W (m K) −1) is successfully sintered on the sapphire to obtain the LF of 833 lm and LE of 252 lm W−1 @ 36.36 W mm−2. The maximum tolerated power density can reach 45.45 W mm−2. In addition, when the color converters are placed in a commercial LD transmission module and continuously light for 24 h at 16.5 W, the relative light intensity only decreases by 14.15% and 12.82%, respectively. Therefore, it is believed that the work has promising applications in laser illumination and accelerating the development of LD lighting. [ABSTRACT FROM AUTHOR]

It is an important challenge to select suitable color converters and apply them to laser diodes (LDs) lighting field. Sapphire plates are used as substrates for phosphor-in-glass films (PiFs) due to their ultrahigh thermal conductivity (∼ 30 W m−1 K−1). Herein, Y 3 Al 3.5 Ga 1.5 O 12 :Ce3+ (YAGG:Ce) phosphor mixing silicate glass powder is successfully sintered on sapphire plates to fabricate YAGG:Ce phosphor-in-glass film (PiF). The microstructure appearance and photoelectric characteristics of the efficient green color converter are studied in detail. In addition, it is worth noting that the maximum internal quantum efficiency of the prepared PiF is 92%, which is close to that of the original phosphor (98%). Meanwhile, the saturation threshold of YAGG:Ce PiF reaches 38.96 W/mm2 with luminous efficiency (LE) of 230.85 lm/W under the excitation of 460 nm blue LD. Notably, PiF has ultra-high power density while still maintaining such high LE. In order to highlight the application of this color converter in laser lighting, we assemble laser flashlights and fireflies lights. The test of the laser flashlight shows excellent performances such as high brightness, strong focusing effect and wide irradiation range. All indications manifest that YAGG:Ce PiF is an excellent green color converter. [ABSTRACT FROM AUTHOR]

To withstand higher power density (PD), exhibit higher luminous efficiency (LE), use in smaller size and lower cost has become the direction of solid-state lighting technology. In the face of high-density laser irradiation and strong thermal shock, improving the performance of color conversion materials related to laser illumination has become a research hotspot. In this study, The Y 3 Al 5 O 12 :Ce3+ phosphor-in-glass film (Ce:YAG-PiF) was obtained by scraping method. The optimized Ce: YAG-PiF external quantum efficiency (EQE) reaches 74.7%, closing to the phosphor (EQE = 78.47%). Excitingly, at 573 K, the thermal conductivity of sample remains at 9.47 W m−1 K−1. Besides, the sample has an ultra-high LE of 256 lm/W @ 32.47 W/mm2. After recombining with the red phosphor CaAlSiN 3 :Eu2+ (CASN), the color rendering index (CRI) is 84.6, the correlation color temperature (CCT) is 5594 K, and the LE is 192.91 lm/W @ 39.87 W/mm2. More importantly, the relative intensity of laser module packaged by Ce:YAG & CASN-PiF decreased by 15% when tested at 4 W for 24 h. Besides, the packaged laser flashlight has good collimation within a visible illuminance. All the results show that the prepared sample can maintain high emission intensity at high laser PD and have a good heat resistance, which is a promising color conversion material in the field of solid-state laser illumination. [ABSTRACT FROM AUTHOR]

Silicon (Si) photodetectors (PDs) have attracted more attention due to their wide applications, but are limited by their extremely weak ultraviolet (UV) photo‐response. Herein, Dy3+‐CsPbCl2Br1 nanocrystals glass (Dy3+‐CPCB NCsG) is synthesized in borosilicate glass by traditional melt‐quenching. The doping of Dy3+ exceedingly improves the PL intensity of CsPbCl2Br1 nanocrystals glass (CPCB NCsG) with enhancing photoluminescence quantum yield from 8.0% to 30.2%, ascribed to the improved crystallinity and reduced defects. Meanwhile, the stability of CPCB NCsG exposed to air, light, and high temperature is largely boosted. After integrating with Dy3+‐CPCB NCsG, the responsivity, external quantum efficiency, detectivity, and stability of Si PDs are significantly enhanced. The responsivity (R) of Si PDs‐5% Dy3+‐CPCB NCsG is 0.006 A W−1 at 320 nm, which is sixfold higher than that of bare Si PDs. This work develops a blue Dy3+‐CPCB NCsG, which has great potential as a new luminescent material for the next generation of Si PDs. [ABSTRACT FROM AUTHOR]

Although backlight display screens based on CdSe quantum dots (QDs) have basically solved the remaining problem of small display gamut, its high preparation cost limits its commercial development. In contrast, perovskite nanocrystals (NCs) with narrow band emission, simple preparation and low cost have made leaps and bounds in next-generation backlit displays luminescent material. However, the instabilities are the main issues to solve before we can apply these materials in modern displays. Researchers have precipitated perovskite NCs in inorganic glass substrates and compounded them with PDMS films for backlighting, but the important factors for commercialization have been ignored: Long-term stability under strong blue light irradiation and preparation cost. In this work, a unique melt-water quenching method combined with composition control was applied to prepare a series of glass powder. The optimal photoluminescence (PL) emission and color coordinates in the color coordinates of glasses powder were elaborately regulated by heat treatment temperature control and the introduction of rare earth Tb. Moreover, the passivation of the glass powder surface through special water treatment greatly improves its stability under long time blue light exposure. After irradiation under 20000 cd/m2 blue light (460 nm) for 500 h, the PL intensity retention rate reaches 85% of commercial CdSe film. The red and green-emitting NCs glasses powder with high photoluminescence quantum yield (PLQY) and stability were combined with PET, PS and PDMS to form a composite film, afterwards, combined with Liquid crystal display (LCD) module shows a fuller color image. Finally, after comparison, PS film was demonstrated to be the most suitable choice for commercialization backlighting. [ABSTRACT FROM AUTHOR]

Solid‐state white lighting applications with high brightness, low power consumption and long operating life have gradually dominated the modern industrial illumination market. For applications in white light‐emitting diodes (WLEDs) and white‐lighting laser diodes (WLDs), Phosphor‐in‐Glass (PiG), owing to its facile process, high efficiency and excellent chromaticity tunability, stands out as an optimal choice among various types of color converters. Currently, research in yellow‐emitting Y3Al5O12:Ce3+ (YAG: Ce) phosphors combined with different glass system has reached a mature stage and the poor illumination is a major bottleneck. Moreover, to realize high‐quality white lighting, exploiting full‐color PiGs is of great importance for its commercialization. Herein, the multicolour PiGs their successfully obtained by deliberately matching different color‐emitting phosphors with the glass matrix. Glass composition selection rules for specific phosphors their proposed based on investigations of glass protection mechanism and the corrosion reaction between phosphors and glass matrix. In addition, an astonishing YAG: Ce PiG phenomenon (zero thermal quenching) is founded and discussed. As for practical applications, high‐quality 5‐W chip‐on‐board (COB) WLEDs their constructed by utilizing simple matches of colorful PiGs. Assembled WLDs modules also rendered a high‐efficiency and stable lighting source. These results dramatically inspire the development of high‐quality solid‐state white lighting applications. [ABSTRACT FROM AUTHOR]

Phosphor‐in‐glass (PiG) film has been proposed as an ideal color converter in laser diodes (LDs) lighting for its advantages of outstanding thermal conductivity (TC) and superior efficiency. Herein, yellow‐emitting Y1.31Ce0.09Gd1.6Al5O12 (Ce: GdYAG)‐PiG composite films are successfully elaborated through a practical blade‐coating approach. Systematical studies are performed on its microstructure, thermal stability, and luminescence performance pumped by LDs. Noteworthy, the highest internal quantum efficiency of film (94.2%) retains 97.1% of the raw phosphors (97%). Particularly, by further introducing micrometer BN with high TC as light scattering center to enhance heat dissipation and increase porosity, the thermal and optical properties of the sample are greatly improved. The luminescence intensity of the sample at 423 K is increased to 1.8 times that at 298 K. The thermal diffusion (TD) and TC of the sample are increased from 1.571 to 4.227 mm2 s−1 and 6.4 to 13.0 W m−1 K−1, respectively. At the same time, the maximum saturation threshold under laser irradiation of Ce: GdYAG + micrometer BN composite film is raised from 3.12 to 5.42 W mm−2 and 260.6 to 354.1 lm, respectively. The combination of excellent optical and thermal performances, coupled with facile and low‐cost synthetic strategy, could push forward the practical application in solid‐state laser lighting. [ABSTRACT FROM AUTHOR]

All-inorganic perovskite nanocrystals (PNCs) hold tremendous prospect in optoelectronics, while the instability has always troubled us to the wide application of perovskite materials. Here, the dual-phase CsPb 2 Br 5 /CsPbBr 3 PNCs were precipitated in the phosphosilicate glass matrix by a melt-quenching method for the first time. Impressively, the introduction of alkaline earth metal oxide CaO was utilized to adjust glass structure, and successfully realizing the conversion between the two phases. To our surprise, the CsPb 2 Br 5 /CsPbBr 3 @glass (PNG) owned the optical characteristics such as narrowband emission, high photoluminescence quantum yield (PLQY ∼ 52%) and tunable PL emission (505–526 nm). In addition, the obtained CsPb 2 Br 5 /CsPbBr 3 @glass exhibited excellent thermal, water and light stabilities. More excitingly, a conceptual experiment was carried out through commercial TFT-LCD devices, and the color gamut of the prepared PNG@PET yellow-emitting composite film covered 130% of National Television System Committee (NTSC) and 97% of Rec.2020, and maintained excellent display performance even after 72 h of continuous operation. This work undoubtedly not only provided a new avenue to control the precipitate composite perovskites in glass, but also demonstrated composite perovskites materials have great potentials for future practical backlit display applications. • Two-phase perovskite CsPbBr 3 /CsPb 2 Br 5 @glass was precipitated in glass matrix for the first time. • Introduction of alkaline earth metal oxide CaO successfully realized the conversion between the two phases. • The obtained CsPb 2 Br 5 /CsPbBr 3 @glass exhibited excellent thermal, water and light stabilities. • The obtained wide color gamut reached 130% of the NTSC standard color gamut, covered 97% of the Rec.2020 color gamut. • After 72 h of continuous operation, the display performance was almost unchanged. [ABSTRACT FROM AUTHOR]

To cope with the market competition of solid-state lighting, there is an urgent need for an efficient and stable fluorescent conversion material that can be used in high-performance lighting. A novel and unique nitride phosphor, La 3 Si 6 N 11 :Ce3+ (LSN), exhibits a wider luminescence spectrum and better thermal quenching performance than Y 3 Al 5 O 12 :Ce3+ (YAG). In this study, LSN phosphors are dispersed in a SiO 2 –B 2 O 3 –CaO–Na 2 O glass system, and a series of LSN phosphor-in-glass (LSN PiG) samples are prepared by a low-temperature co-sintering technique. The luminescence, thermal stability, microstructure and photoluminescence properties are investigated. The internal quantum efficiency of LSN:Ce PiG (85%) is close to that of the original phosphor (90%). Under excitation of a 450 nm blue laser diode, the LSN PiG produces white light with a luminescence efficiency of 145.91 lm/W, and a luminous flux of 209lm is achieved. Moreover, the color rendering index of LSN is much higher than that of YAG, reaching 73, indicating that LSN PiGs have good application prospects as yellow converters in high-power laser lighting. [ABSTRACT FROM AUTHOR]

We report the preparation of transparent Ce and Tb co-doped Y 3 Al 5 O 12 single crystal by the Czochralski method. The characterization of the resulting single crystal was accomplished by using X-ray powder diffractometer, scanning electron microscopy and energy dispersive X-ray spectroscopy. Absorption peak of the single crystal at about 460 nm has been obtained from ultraviolet–visible absorption spectrometer and their intensity is changed with different annealing condition. Its optical properties also have been investigated using fluorescence spectrometer. What’s more, its photoelectric parameters were studied by LED fast spectrometer. The constructed single crystal based white-light-emitting diode exhibits a high luminous efficiency of 140.89 lm/W, and a correlated color temperature of 4176 K as well as a color rendering index of 56.7, which reveal the prominent feasibility of the present single crystal material in white-light-emitting diode application. [ABSTRACT FROM AUTHOR]

Currently, the major commercial white light-emitting diode is the phosphor converted LED made of blue-emitting chip and Y 3 Al 5 O 12 :Ce 3+ yellow phosphor dispersed in organic silicone. However, the organic binder in high-power device ages easily and turns yellow due to accumulated heat emitted from chip, which adversely affects the device properties such as luminous efficacy and color coordination, and therefore reduces its long-term reliability as well as lifetime. In this mini-review article, we provide an overview of recent progresses in developing transparent inorganic glass–ceramics phosphors excitable by blue chip, as an alternative to conventional polymer-based phosphor converter, for construction of high-power white light-emitting diodes. Two kinds of synthesis routes, glass crystallization and low-temperature co-sintering, are discussed in detail. Afterwards, the materials design, structure/property optimization as well as glass–ceramic-based WLED devices construction are summarized. Finally, challenges and future advances for the realization of transparent glass–ceramics in commercial applications will be presented. [ABSTRACT FROM AUTHOR]

The next generation of solid-state lighting technology driven by laser diodes (LDs) is in full development, and the way green fluorescent materials with narrow-band emission (such as β-Sialon) exert their inherent potential in laser displays and projectors has attracted public interest. In this paper, stable borosilicate glass was utilized as an inorganic binder to prepare phosphor-in-glass films (PiFs) by cosintering sapphire and β-Sialon phosphor. There was no interface reaction between the glass and the phosphor, and the phosphor was uniformly and nondestructively distributed in the composite film closely attached to the sapphire. The optimized PiFs achieved an internal quantum efficiency of 76% and a thermal conductivity of 8.6 W m−1K−1, and a thermal diffusivity of 2.6 mm2 s−1 demonstrated their excellent thermal stability. A beam of high-purity light with a brightness of 887 lm and a luminous efficiency of 183 lm/W was achieved under 450 nm blue LD radiation, which is the relatively superior performance by β-Sialon series luminescent materials in an LD application reported thus far. We believe that in the near future, strategies such as adjusting glass composition, improving quantum efficiency, and sample postprocessing will further improve the performance of β-Sialon phosphors with narrow-band emission to make new contributions in the field of high-quality lasers. [ABSTRACT FROM AUTHOR]

The innovative discovery is that Li 2 O has a "modified" effect on the glass network structure. With the increase of Li 2 O content, the structure of the glass network changes from two-dimension to three dimensions, forming a higher aggregation state. The three-dimensional structure is conducive to the ion diffusion of Cs+, Pb2+, Br- and other precursors to form CsPbBrI 2 nanocrystals, which greatly improves the optical properties of CsPbBrI 2 @glass. Crafted CsPbBrI 2 @glass@PET films show richer colors than commercial phosphor films. [Display omitted] • A new Li-Al-Si (LAS) glass system based on CsPbBrI 2 QDs was developed. • Li 2 O plays a great role in regulating the structure of LAS glass network. • CsPbBrI 2 @glass has good environmental stability. • The CsPbX 3 @glass@PET filmsexhibited homogeneous film-forming quality, which can be used for largescale production of QDs films. • The CsPbX 3 @glass@PETfilm shows richer colors than commercial displays on the liquid crystal display (LCD) screen. All-inorganic CsPbX 3 (X=Cl, Br, I) perovskite quantum dots (QDs) have garnered extensive attention due to excellent optical properties. However, practical applications have been hampered by their instability. Dense amorphous glass protected CsPbX 3 perovskite QDs with excellent long-term stability are ideal conditions for developing high-quality liquid crystal displays (LCD). In this paper, CsPbBrI 2 QDs are precipitated in a novel aluminosilicate glass matrix. This work shows that the network structure of aluminosilicate glass is "modified" by Li 2 O. As the Li 2 O content increases, the glass network structure can be connected into a more aggregation state. This modification of Li 2 O increased the photoluminescence quantum yield (PLQY) of CsPbBrI 2 @glass (CPBI@G) from 22 % to 86 %. Surprisingly, CPBI@G exhibits excellent long-term stability against water, heat, and light. The specially designed CsPbX 3 @glass@PET light conversion film achieves a wide-color-gamut of 123.7 % of the NTSC 1953 standard. The film displays colors richer than commercial displays, paving the way for the commercial use of the CPBI@G nanocomposite in backlight displays. [ABSTRACT FROM AUTHOR]

The 2-DE/MS-based proteomics approach was used to investigate the differences of porcine skeletal muscle, and ATP5B was identified as one differential expression protein. In the present study, ATP5B gene was further cloned by RT-PCR, the sequence was analyzed using the bioinformatics method, and the mRNA expression was detected by qRT-PCR. Sequence analysis showed that the porcine ATP5B gene contains an ORF encoding 528-amino-acid residues with 49 and 166 nucleotides in the 5′ and 3′ UTRs, respectively. The mRNA of ATP5B was widely expressed in all 14 tissues tested, but especially highly expressed in parorchis and fat. The expression pattern of ATP5B was similar in Large White and Meishan breeds, showing that the expression was upregulated by 3 days after birth and downregulated during postnatal development of skeletal muscle. Comparing the two breeds, the mRNA abundance of ATP5B in Large White was more highly expressed than in Meishan at all developmental stages ( P < 0.05). Moreover, a synonymous mutation, G75A in exon 8, was identified and association analysis with the traits of meat quality showed that it was significantly associated with the RLF, FMP, IFR, IMF, and IMW ( P < 0.05). These results suggested that ATP5B probably plays a key role in porcine skeletal muscle development and may provide further insight into the molecular mechanisms responsible for breed-specific differences in meat quality. [ABSTRACT FROM AUTHOR]

Abstract: Na2O–B2O3–SiO2 glass doped with In and Cu2In nanoparticles are fabricated through sol–gel technique. The morphology and structure of the samples are investigated by X-ray diffraction (XRD) technique, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS). The results show that the tetragonal phase of In particles with an average size about 50.0nm and hexagonal phase of Cu2In particles about 31.5nm are formed in the glass matrix. The absorption optical properties of the as-prepared glass are also characterized. Furthermore, the glasses are measured by Z-scan technique to investigate the third-order nonlinear optical properties. The results display that the In and Cu2In nanoparticles have the behaviors of both nonlinear optical saturable absorption and refraction with self-defocusing effect. The third-order nonlinear optical coefficient χ (3) of In and Cu2In nanoparticles are calculated to be 1.64×10−10 esu and 2.77×10−10 esu, respectively. [Copyright &y& Elsevier]

Stable color converters exhibiting high color rendering index have drawn researchers' attention for their applications in high-quality white laser lighting. In this study, we develop the multi-color phosphor-in-glass (PIG) with the weight ratio of green-emitting (Y 3 Al 3.08 Ga 1.92 O 12 :Ce3+) to red-emitting (CaAlSiN 3 :Eu2+) phosphor powders (10/1–18/1) by low temperature co-sintering method. The obtained composite material displays an outstanding optical and thermal performance, including a high internal quantum efficiency of 84.2%, a high transparency of 45% in the visible region and a low thermal quenching (it remains 86% at 448 K). By integrating 450 nm blue laser diodes with optimized multi-color PIG, the white light with a maximum luminous flux of 258 lm and a luminous efficiency of 137 lm/W is achieved for the first time. Additionally, considering the white balance, by tailoring the weight ratio of green-emitting to red-emitting phosphor and the thickness of PIG, the 14/1 PIG at fixed thickness of 0.75 mm produces pure white light with ultra-high color rendering index of 95.2 and a high luminous efficiency of 120.9 lm/W under power density of 2.39 W/mm2 irradiation. The above superior characteristics imply that the multi-color PIG is an ideal candidate for high-quality white laser lighting applications. [ABSTRACT FROM AUTHOR]

The perovskite material has received much attention due to its excellent photoelectric properties. However, the toxicity of Pb has always affected the wide application of perovskite materials. Herein, we proposed to replace Pb ions with the same divalent ions Ba and dope them into the CsPbBr3 perovskite nanocrystals' (PNCs) lattice to reduce the content of Pb elements. In this work, we have successfully prepared a series of CsPb1−xBaxBr3 PNCs (x = 0, 0.1, 0.2, 0.3, and 0.4) and CsPbBr3 PNCs (Ba-doped concentration = x = 0, 0.05, 0.10, 0.15, and 0.20); the best among them were CsPb0.7Ba0.3Br3 PNCs and CsPbBr3 (Ba = 0.1) PNCs, respectively. Compared with CsPbBr3 PNCs, the photoluminescence (PL) intensity of CsPb0.7Ba0.3Br3 PNCs and CsPbBr3 (Ba = 0.1) PNCs has been improved to different degrees. It was worth mentioning that after the addition of a Ba element, the photoluminescent quantum yield (PLQY) of CsPb0.7Ba0.3Br3 PNCs and CsPbBr3 (Ba = 0.1) PNCs was increased to 81% and 65%, respectively. It was due to the high PLQY of CsPb0.7Ba0.3Br3 PNCs that the selected CIE color coordinate monochromatic light encompassed 119.0% of NTSC color gamut. [ABSTRACT FROM AUTHOR]

Objectives: RNF20 is recognized as a main E3 ligase for monoubiquitination of histone H2B at lysine 120 (H2Bub). The critical role of RNF20 and H2Bub in various molecular events, such as DNA replication, RNA transcription, and DNA damage response, has been widely investigated and documented. However, its role in porcine adipogenesis remains unknown. In this study, we aimed to clarify the effect of RNF20 on porcine preadipocyte differentiation. Materials and Methods: Backfat tissues from fat‐type pigs (Bama and Meishan) and lean‐type pigs (Yorkshire and Landrace) were collected to detect the expression level of RNF20. Preadipocytes were isolated from Bama piglets and induced to differentiation. Small interfering RNAs were applied to deplete RNF20. Oil Red O staining, quantitative real‐time PCR, RNA‐seq, Western blot analysis, and EdU assays were performed to study the regulatory mechanism of RNF20 during adipogenesis. Results: We found that the expression levels of RNF20 and H2Bub were significantly higher in backfat tissues from fat‐type pigs than in those from lean‐type pigs. Consistently, the significantly induced expression of RNF20 and H2Bub was also observed in porcine differentiated adipocytes. In addition, knockdown of RNF20 greatly inhibited porcine adipogenesis, as evidenced by dramatically decreased lipid droplet formation and lower expression levels of adipogenic transcription masters in RNF20 knockdown cells. Mechanistically, the depletion of RNF20 decreases the cell proliferation and the level of p‐C/EBPβ via the Ras‐Raf‐MEK1/2‐ERK1/2 cascade pathway at the mitotic clonal expansion phase and therefore suppresses cell differentiation. Conclusions: Our results demonstrate that RNF20 is required for porcine preadipocyte differentiation. [ABSTRACT FROM AUTHOR]

In this study, a simple low‐temperature self‐assembly strategy is used to synthesize the CsPbBr3/Cs4PbBr6 nanocomposite with a relatively high photoluminescence quantum yield (PLQY, 72%) and product yield (87%). As expected, the nanocomposite exhibits good photoluminescence (PL) performance and stability. Further, 90% of the PLQY is maintained even when heating at 100 °C for 24 h, and almost no emission degradation is observed after storage in ethanol for 10 days. Furthermore, the prepared CsPbBr3/Cs4PbBr6 nanocomposite exhibits the reversible luminescence phenomenon by simply applying the wetting and drying process. This abnormal phenomenon is due to the internal phase transformation of the CsPbBr3/Cs4PbBr6 nanocomposite. The potential application of the nanocomposite in anti‐counterfeiting has been demonstrated. This work facilitates the production and application of inorganic metal halide perovskite‐based functional materials. [ABSTRACT FROM AUTHOR]