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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]

All-inorganic CsPbX3 (X = Cl, Br, I) perovskite nanocrystals (NCs) are the most promising next generation photoelectric materials owing to their excellent properties. Although embedding perovskite NCs into a glass matrix improves their stability, different applications require perovskite nanocrystal glasses (PNGs) with different properties. In this work, we controlled the network structure of the precursor glass by changing the content of ZnO (3.8–11.4 mol. %) in the raw materials, thus inhibiting the direct precipitation of CsPbCl2Br NCs in the glass (i.e., the self-crystallization process), and obtained samples with local emission and high transmittance. In addition, we incorporated rare-earth (RE) Yb3+ into a CsPbCl2Br PNG to achieve efficient ultraviolet (UV) to near-infrared quantum cutting emissions and boost the UV response of silicon photodetectors (PDs). Finally, after combining the Yb3+-doped CsPbCl2Br PNG on the Si PDs, the responsivity of the latter increased to 0.014 A/W at 320 nm, which is 14 times higher than that of the bare Si PDs. Moreover, Si PDs based on Yb3+-doped CsPbCl2Br PNG exhibited excellent photocurrent stability. [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]

Mn‐doped CsPbCl3 perovskite nanocrystal (PeNC) glass was prepared by melt quenching and in situ crystallization. Under the protection of robust glass, PeNCs exhibit excellent moisture resistance and thermal stability. The combination effect of thermal quenching and energy transfer of exciton to Mn2+ enables its promising applications in the field of temperature sensor. Interestingly, by matching with ultraviolet chips, all‐inorganic blue‐red emitting conversion device consisting of PeNC glass was prepared for light‐emitting diodes (LEDs), which can meet the light requirements of plant growth. The cultivation results indicated that the growth of cabbages using PeNC plant cultivation LEDs was greater than those cultivated using commercial w‐LEDs (white light‐emitting diodes). Therefore, Mn‐doped CsPbCl3 PeNCs can be used as a new generation of solid fluorescent materials in the field of indoor plant cultivation LEDs. [ABSTRACT FROM AUTHOR]

By increasing the heat treatment temperature, the average size of CsPbBr3 quantum dots (QDs) in the glass matrix was increased, which contributed to a 5.5 fold increase of the optical gain coefficients. And the corresponding lasing threshold decreased from 0.752 mJ cm−2 to 0.138 mJ cm−2. [ABSTRACT FROM AUTHOR]

In this report, a mixed‐metal cation‐based halide perovskite (HP) CsPb1−xTixBr3 quantum dots (QDs) were first embedded in the B–Si–Zn glasses using a traditional approach of melt quenching and heat treating. A battery of test results such as photoluminescence, X‐ray diffraction, and time‐resolved attenuation prove that Ti ions do not destroy the properties of CsPbBr3, and they are successfully doped into CsPbBr3. At the same time, the doping of Ti ions also reduces the toxicity of lead. By altering the ratio of Pb/Ti, we determined the optimum ratio of CsPb0.7Ti0.3Br3 QDs through experimental data. Due to the excellent optical properties and stability of CsPb0.7Ti0.3Br3 QDs glass, it was designed to construct the white‐light emitting diode device with tunable color coordinate, color rendering index, correlated color temperature, and a high luminous efficiency compared with CsPbBr3 QDs glass, which may be a promising candidate for the field of lighting and displays. [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]

This study outlines a general but convenient approach towards the synthesis of a Ce3+:Y3Al5O12 phosphor-in-glass (PiG) with a relatively low sintering temperature. A comparative study of the as-synthesized PiG and glass ceramic prepared using a conventional route was carried out to explore the structural, morphological and optical properties. In addition, the effect of phosphor concentration and the sintering temperature/time on the luminescence properties was systematically investigated. Notably, we fabricated a high-performance white LED based on PiG with a high luminous efficacy (125 lm W−1), low correlated colour temperature (4329 K) and colour rendering index of 68. Furthermore, the PiG material demonstrates an excellent thermal stability up to 150 °C, superior to the low thermal stability of conventional Ce3+:Y3Al5O12 doped silicone. Therefore, we present a transparent phosphor glass with desirable potential for application in high powered W-LEDs. [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]

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]

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]

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]

In this work, a series of perovskite nanocrystals glasses with different concentrations of Tb3+ doped CsPbI 3 , which have excellent characteristics in terms of water resistance and cyclic thermal stability, were prepared by melt quenching and in situ crystallization methods. With the introduction of Tb3+, the photoluminescence quantum yield of CsPbI 3 was greatly improved. Considering that the two fluorescence peaks of Tb3+ and CsPbI 3 at different positions respond differently to temperature stimuli, we studied the potential application of those glasses as optical temperature detection tools in the temperature range of 80−480 K. More importantly, the results showed higher sensitivity than other tools, with the maximum absolute and relative temperature sensitivities reaching as high as 0.034 K−1 and 1.78 % K-1, respectively. This work is expected to provide an effective method for the application of CsPbX 3 in high-performance optical temperature sensing materials. [ABSTRACT FROM AUTHOR]

Since being synthesized, CsPbX 3 (X = Cl, Br or I) quantum dots (QDs) have gained increased interest due to their superior performances in photovoltaic applications. Herein, Sm3+-doped CsPbBr 3 nanocrystallines (NCs) were successfully prepared in zinc borosilicate sodium (ZnO–B 2 O 3 –SiO 2 –Na 2 CO 3 , ZBSN) glass, and the as-prepared glass exhibited a strong red emission, which was attributed to the effects of the energy level transitions in Sm3+. Importantly, white light-emitting diodes (W-LEDs) were prepared by combining the glass with a blue InGaN chip, eliminating the need for a red phosphor to provide the red light, and white light was generated with a high colour rendering index (CRI: 82.6), a low correlated colour temperature (CCT: 4455 K) and colour coordinates in the white light region (0.3547, 0.3234). The glasses show excellent stability at 85 °C and 85% RH. Therefore, the Sm3+-doped CsPbBr 3 NCs glass can be used as a colour converter for application in lighting engineering. [ABSTRACT FROM AUTHOR]

Inorganic perovskite nanocrystals (NCs) doped with metal ions have received much attention due to their superior optoelectronic properties and environment friendly. Here, we synthesized Zn-doped CsPbBr 3 perovskite NCs in borosilicate glass by melt-quenching. When ZnBr 2 and PbBr 2 were in half, the fluorescence intensity was enhanced, and the PLQYs increased from 32 to 36%. Under the excitation of 460 nm blue chip, white LED (WLED) was fabricated by using Zn-doped CsPbBr 3 NCs glass and red phosphor powder CaAlSiN 3 :Eu2+. The experimental results show that the photoelectric parameters of the constructed white LED are considerable, among which the luminous efficacy (LE) is 70.1 lm/W, and a high LE is 72.79. However, pure CsPbBr 3 has a low LE value of 26.1 lm/W and a CRI value of 76.9 Zn2+ doped CsPbBr 3 can reduce the toxicity of materials and can be used to prepare high-performance optical devices. The study showed a new doped chemical model system for various optoelectronic applications. [ABSTRACT FROM AUTHOR]

Highlights • Sn-doped CsPbBr 3 QDs glasses were successfully synthesized by melt-quenching. • QDs glasses hold excellent luminescent properties while reducing toxicity. • The stability of Sn-doped CsPbBr 3 QDs glasses were greatly improved. • WLED based on Sn-doped CsPbBr 3 QDs glasses realized tunable CCT, CRI and CIE. Abstract CsPbX 3 (X = Cl, Br, I) quantum dots (QDs) are considered to be candidate materials for applications in the field of photoelectric devices due to their remarkable photoelectric properties, such as high photoluminescence quantum yields (PLQYs), narrow emission wavelengths and easy synthesis. However, their instability and high toxicity restrict the further development of QDs. Here, we synthesized Sn-doped CsPbBr 3 perovskite nanocrystals in borosilicate glasses (B 2 O 3 -SiO 2 -ZnO, BSZ) by traditional melt-quenching for the first time. The sample exhibited excellent air stability and thermal stability. Based on these results, white-light-emitting devices were fabricated by incorporating CsPb 0.64 Sn 0.36 Br 3 QDs glasses and commercial red phosphor (CaAlSiN 3 :Eu2+) into a blue LED device. The tunable color coordinates of (0.3179–0.3596, 0.3174–0.3665) and adjustable correlated color temperature (CCT) from 6119 K to 3128 K were successfully achieved in the white light area, which could promote the application of metal ion-doped perovskite QDs in photoelectric devices. [ABSTRACT FROM AUTHOR]

Herein, CsPb 2 Br 5 quantum dots (QDs) in glasses under various durations of heat-treatment at 420 °C was investigated. Photoluminescence (PL) spectra of CsPb 2 Br 5 QDs were tuned from 499 to 506 nm and the decay time show a increasing for the structure defect and electron-hole consist in CsPb 2 Br 5 QDs glasses. The CsPb 2 Br 5 glass showed an thermal stability with about 85% emission loss when elevating temperature from 298 K to 433 K. Moreover, The warm white light emitting diode (WLED) was realized through incorporating CaAlSiN 3 :Eu 2+ red phosphor with CsPb 2 Br 5 QDs doped borosilicate glasses on an InGaN blue chip. Finally, we achieved a luminous efficacy of 42.7 lm/W, CCT of 3915 K and CRI of 68.5 under 20 mA current driving. [ABSTRACT FROM AUTHOR]

Silicon (Si) photodetectors (PDs) have been widely used due to their many excellent properties, however, the extremely weak ultraviolet (UV) photo-response severely affect its future development. In this work, we controlled the concentration of CsPbCl 2 Br 1 NCs in the glass and obtained samples with local emission and high transmittance. Furthermore, we incorporated Eu3+ into CsPbCl 2 Br 1 perovskite nanocrystals glass (PNG) to achieve efficient ultraviolet (UV) to visible emissions and boost the UV response of Si PDs. Finally, after combining with the CsPbCl 2 Br 1 : Eu3+ PNG on the Si PDs, the responsivity increased to 0.0088 A/W at 320 nm, which means 8.8 times higher than that of the pristine Si PDs. Moreover, Si PDs based on CsPbCl 2 Br 1 : Eu3+ PNG exhibited excellent stability, and the photocurrents of the device almost not changed after 60 days. This work offers a novel strategy for improving UV response of Si PDs. • Enhanced the R (reached 0.0088 A/W, D (up to an order of magnitude) and EQE (from 0 to 3.79%) of integrated Si PDs. • An effective enhancement in PLQY (from 6.8% to 28.1%) of CsPbCl 2 Br 1 PNGs by doping Eu3+. • The PNG with high transparence was successfully prepared by adjusting the content of CsPbCl 2 Br 1 NCs. • It is found that PNGs effectively avoid the instability in terms of water, thermal and UV light owing to protection of glass matrix. [ABSTRACT FROM AUTHOR]

We report the preparation of uniform spherical shape silver nanocrystals doped sodium borosilicate monolithic transparent glass by sol–gel method. The characterization of the resulting Ag nanocrystals was accomplished by using X-ray powder diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and energy dispersive X-ray spectrum. Surface plasma resonance absorption peaks of the silver nanocrystals glass at about 406 nm have been obtained from ultraviolet–visible absorption spectrometer and their intensity is changed with different heat treatment temperatures. We have investigated the nonlinear optical properties of silver quantum dots doped glass using Z-scan technique. Third-order nonlinear optical susceptibility χ (3) of the glass was estimated to be 1.01 × 10 −11 esu. In particular, a mechanism for the formation of Ag quantum dots glass is proposed. This work will significantly promote the obtained material applications in optical devices. [ABSTRACT FROM AUTHOR]

Highlights: [•] The CuGaS2 quantum dots doped sodium borosilicate glass was prepared by sol–gel methods. [•] The obtained glass was investigated by XRD, (S)TEM and XPS. [•] Tetragonal crystalline phase of CuGaS2 quantum dots with spherical shape were formed uniformly in the glass matrix. [•] The third-order optical nonlinearity was investigated by Z-scan technique. [ABSTRACT FROM AUTHOR]

Highlights: [•] The Cu2In nanoparticles doped in Na2O–B2O3–SiO2 glass were prepared by sol–gel methods. [•] Microstructure of Cu2In nanoparticles was investigated by XRD, EDS and TEM. [•] The third-order optical nonlinearity was investigated by using Z-scan technique. [Copyright &y& Elsevier]

Highlights: [•] The NBS glass containing different Cu concentrations were prepared by sol–gel method. [•] High dispersion and narrow distribution of Cu nanocrystals were in the form of glass. [•] The optical absorption spectra exhibited the typical SPR for Cu in the wavelength range of 550–600nm. [•] The third-order optical properties were investigated by Z-scan technique. [Copyright &y& Elsevier]

Abstract: The In2S3 quantum dots embedded in sodium borosilicate glass matrix was prepared using both sol–gel and atmosphere control methods. According to the results of X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), energy dispersive X-ray (EDX) spectrum, high-resolution transmission electron microscopy (HRTEM), and selected area electron diffraction (SAED), In2S3 quantum dots in tetragonal crystal system have formed uniformly in the glass, and the size distribution of these quantum dots generally ranged from 12 to 20nm. The third-order optical nonlinearity of In2S3 quantum dots doped sodium borosilicate glass was investigated by Z-scan technique. The value of χ (3) was estimated to be 1.16×10−12 esu at 800nm. [Copyright &y& Elsevier]

Abstract: The sodium borosilicate glass doped with semimetal Bi nanocrystals is prepared by employing both sol–gel and atmosphere control methods. Microstructures and the third-order optical nonlinearities of the glass are investigated by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), and Z-scan technique. The results show that semimetal Bi nanocrystals in hexagonal crystal system with spherical shape have formed uniformly in the glass, and the size of these nanocrystals is almost less than 40nm. Furthermore, the third-order optical nonlinear refracitve index γ, absorption coefficient β, and susceptibility χ (3) of the glass are determined to be 9.40×10−17 m2/W, 1.25×10−9 m/W, and 6.80×10−11 esu, respectively. [Copyright &y& Elsevier]

• The self-crystallization of CPB was modulated by ZnO working as the network modifier. • The maximum PLQY of the self-crystallized CPB was up to 45%. • When the content of ZnO was 4 mol%, the non-self-crystallized CPB was obtained. • The non-self-crystallized CPB was applied for rewritable data storage. • The non-self-crystallized CPB for data storage showed excellent water and ethanol stability. In the era of big data, the large amount of data generated every second requires modern and advanced data storage technologies. Femtosecond (fs) laser induced crystallization allow for the realization of fixed-point crystallization inside the CsPbBr 3 nanocrystals glasses (CPB), which can be applied in data storage. However, CPB is prone to self-crystallization prior to further heat treatment, interfering with fs-induced crystallization inside the glass and seriously hindering its application in data storage. Herein, we first propose the inhibition of CPB from self-crystallization by modulating the content of ZnO (4–20 mol%) using a melt-quenching method. ZnO was employed as a network modifier and was closely related to the glass network structure. When the content of ZnO was 4%, the CPB did not self-crystallize and was colorless. It was applied in the rewritable data storage by combining the 800 nm fs laser-induced crystallization, annealing (460 ℃/0.5 h) and fs laser erasing (20 mW). This work demonstrates a simple and efficient way to control the self-crystallization of CPBs, enhancing their potential practical application in high-capacity optical data storage with ultra-long working lifetimes. [ABSTRACT FROM AUTHOR]

• Gd-doped CsPbBrI 2 NCs were successfully prepared in borosilicate glass matrix. • CsPbBrI 2 NCs@glasses possess superior optical performance through Gd3+ doping. • The water / thermal / light stability of Gd-doped CsPbBrI 2 NCs@glasses are excellent. • High-performance WLEDs was assembled successfully by Gd-doped CsPbBrI 2 NCs@glasses. Here, Gd-doped CsPbBrI 2 nanocrystals (NCs) in borosilicate glass (B 2 O 3 -SiO 2 -ZnO) were successfully synthesized by the traditional melting quenching method. The optical properties of CsPbBrI 2 NCs@glasses at different heat treatment temperatures and the content of Gd3+ were studied. It is found that CsPbBrI 2 NCs@glasses have greatly improved photoluminescence quantum yields (PLQYs) after doping (form 15.3% to 37%) and excellent hydrothermal and light stability. In addition, a white light emitting diode (WLED) was successfully prepared by combining Gd-doped CsPbBrI 2 NCs@glass and Ce3+: YAG phosphors with the blue light emitting diode (LED). After a series of adjustments, the high performance WLED device with a chromaticity coordinate (CIE) of (0.3340, 0.3386), luminous efficiency (LE) of 90.09 lm/W, correlated color temperature (CCT) of 5430 K and the color rendering index (CRI) of 81.4 was fabricated. This work provides a new strategy in the field of metal ion doped perovskite NCs for future reference and has potential applications in LEDs. [ABSTRACT FROM AUTHOR]

CsPbX 3 (X=Cl, Br or I) has been studied due to its outstanding optical properties. However, it is difficult to use in practical applications due to its poor stability. Currently, there are interesting examples of CsPbX 3 compounded with glass substrates. The quantum efficiencies of CsPbX 3 NC glasses are relatively low. In this work, we propose a simple method for fabricating Yb3+-doped CsPbI 3 quantum dots in glass via a conventional melt quenching technique. It was found that the CsPbI 3 NC glasses had blue-shifted emission with increasing amounts of the Yb3+ dopant. The photoluminescence quantum yield (PLQY) of CsPbI 3 : Yb3+ NC glass reached from 20% to 66.7%. And the CsPbI 3 : Yb3+ NC glass exhibited good thermal stability. Moreover, the experimental results showed th*at the CsPbI 3 : Yb3+ glass could match the properties of a commercial fluorescent powder used to make white LEDs (WLEDs). [ABSTRACT FROM AUTHOR]

Cd2+ doped CsPbBr 3 perovskite quantum dots were synthesized in borosilicate glass for the first time by traditional melting method. By X-Ray Diffraction (XRD) and high resolution electron microscopy analysis, it was proved that Cd2+ successfully entered the perovskite lattice structure. The samples have good optical properties, high photostability, chemical stability, thermal stability and water stability. On this basis, CsPb 0.7 Cd 0.3 Br 3 QDs glass, commercial red phosphor (CaAlSiN 3 :Eu2+) and blue light chip were coupled to produce white LED devices. This discovery opens up a new way for the application of metal ion-doped perovskite QDs glass in optoelectronic devices. • A series of Cd2+ doped CsPbBr 3 QDs glasses with high PL intensity, quantum efficiency and excellent stability were prepared. • The WLEDs made by CsPb x Cd 1-x Br 3 QDs glass produce high quality white light, adjustable from cold to warm white light. • Compared with the original CsPbBr 3 QDs glass, the quantum efficiency of Cd2+ doped glass has been improved greatly. [ABSTRACT FROM AUTHOR]

• A series of Ni2+ doped CsPbBr 3 NCs glass was prepared. • The principle of surface modification of perovskite was discussed. • The fluorescence intensity and quantum efficiency of NCs glass are greatly improved. • NCs glass has excellent thermal and water stability compared to NCs solutions. • Density functional theory reveals the formation of surface defects in perovskites. All-inorganic perovskite nanocrystals (NCs) have become a new generation of low-cost semiconductor luminescent materials for optoelectronic applications due to their excellent optical properties. Prepared perovskite NCs undergo different ion doping and surface modification, which makes the NCs photo-luminescence quantum yield (PLQY) basically uniform. However, stability of perovskite NCs solution in the environment has always been an important factor restricting its practical application. Here, we used melt-quenching method to prepare a series of different Ni2+ doped CsPbBr 3 NCs glass. Through experimental characterization and DFT calculation it is found that the entry of Ni2+ into the NCs lattice can eliminate the structural defects of NCs and improve the order of the perovskite lattice. Ni2+ doped perovskite NCs have strong band edge emission and high quantum yield (up to 84.3%). [ABSTRACT FROM AUTHOR]

• Ti-doped CsPbI 3 QDs were successfully prepared in borosilicate glass matrix. • Ti-doped CsPbI 3 QDs@glasses possess superior optical performance. • The water/thermal stability of Ti-doped CsPbI 3 QDs@glasses are excellent. • The wLED based on CsPb 1− x Ti x I 3 QDs@glasses realized outstanding LE and CRI. • LED devices based on CsPb 1− x Ti x I 3 QDs@glasses well satisfy plant growth. Currently, the application of all-inorganic cesium lead halide perovskite (CsPbX 3 , X = Cl, Br, I) quantum dots (QDs) is limited due to toxicity of lead and poor ambient stability. In our work, a series of Ti-doped CsPbI 3 QDs were successfully prepared in borosilicate glass (SiO 2 -B 2 O 3 -ZnO) by the melt quenching and in situ crystallization technique. The samples showed excellent water/thermal stability, and the tunable emission (650–695 nm) was controlled by different Ti contents and heat treatment temperatures. In particular, the optical properties of CsPb 1− x Ti x I 3 QDs@glasses (x ≤ 0.5) are superior to those of pristine CsPbI 3 QDs@glass. As a result, the wLED was assembled using red-emitting CsPb 1− x Ti x I 3 QDs@glasses and yellow-emitting Ce3+:YAG phosphor under excitation of InGaN blue chip, which demonstrated an outstanding luminous efficiency of 102.44 lm/W, a high color rendering index of 80.6. Particularly, Ti-doped CsPbI 3 QDs@glasses with red and far-red light are combined with a blue-chip to assemble an LED device, which exactly satisfies the lighting conditions of plant growth. [ABSTRACT FROM AUTHOR]

• K x Cs 1−x PbBr 3 NCs glasses and KPbBr 3 NCs glass have been successfully synthesized. • K 0.6 Cs 0.4 PbBr 3 NCs glass presented a higher PLQY of 62% and better stability. • Optical third-order nonlinearity of K 0.6 Cs 0.4 PbBr 3 NCs glass was researched. • High-performance WLEDs was assembled successfully by K 0.6 Cs 0.4 PbBr 3 NCs glass. CsPbX 3 (X = Cl, Br, I) nanocrystals (NCs) glasses formed utilizing conventional melt-quenching with a subsequent heat-treatment method demonstrate excellent performance and can resist temperature and light irradiation; further, CsPbX 3 NCs glasses have improved stability in air and water when compared to traditional way. Nevertheless, one of the fatal disadvantages of CsPbX 3 NCs glasses are their low photoluminescence quantum yields (PLQY). Here, we demonstrate a new avenue that K+ ions doped CsPbBr 3 NCs glasses (K-CPB NCs glasses) systems utilizing K x Cs 1−x PbBr 3 (x = 0, 0.2, 0.4, 0.6, 0.8, 1) NCs glasses, and we surprisingly find that K 0.6 Cs 0.4 PbBr 3 NCs glass reaches the highest PLQY of 62% when the molar ratio of K+/Cs+ = 0.6/0.4. Meanwhile, in comparative experiments, we have noticed that K 0.6 Cs 0.4 PbBr 3 NCs glass has better water resistance and thermal stability than CsPbBr 3 NCs glasses what we had before. K-CPB NCs glasses has a significantly improved applications scope for cesium lead halide perovskite in the field of photoelectricity, such as solar cells and perovskite light-emitting diodes (PeLEDs). In addition, we have successfully fabricated the pure phase of KPbBr 3 NCs glass and its existence has been proven via a series of representational means, consequently, this research opens the door for the further study of perovskite materials. Fortunately, K-CPB NCs glasses perform better in optical third-order nonlinearity, and we believe these findings will promote its applications in nonlinear optoelectronic devices. Ultimately, white LEDs (WLEDs) has been successfully equipped with K 0.6 Cs 0.4 PbBr 3 NCs glass, which presents excellent optical parameters. [ABSTRACT FROM AUTHOR]