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2. Solution processing of hybrid ZnO nanophosphors assembled in mesosphere for LED application

Author

Daniele, S., Omar, L., Cornier, T., Masenelli, B., Aleksandra (Alexandra) Apostoluk, Chadeyron, G., Potdevin, A., IRCELYON-C'Durable (CDURABLE), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), INL - Spectroscopies et Nanomatériaux (INL - S&N), Institut des Nanotechnologies de Lyon (INL), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-École Centrale de Lyon (ECL), Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE), Institut de Chimie de Clermont-Ferrand (ICCF), SIGMA Clermont (SIGMA Clermont)-Institut de Chimie du CNRS (INC)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), IRCELYON, ProductionsScientifiques, École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École Supérieure de Chimie Physique Électronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI]Engineering Sciences [physics], [SPI] Engineering Sciences [physics], [CHIM.CATA] Chemical Sciences/Catalysis, [SDE.ES] Environmental Sciences/Environmental and Society, [CHIM.CATA]Chemical Sciences/Catalysis, [SPI.MAT] Engineering Sciences [physics]/Materials, [SDE.ES]Environmental Sciences/Environmental and Society, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

SSCI-VIDE+CDFA+SDA:LOM:TCO; International audience; An important economic improvement of white light emitting diode (LED) is based on the use of lanthanide-free phosphors that are supposed to convert UV light into visible one, thanks to down-conversion (DS) process. ZnO nanoparticles have aroused an increasing interest since they possess a variety of intrinsic defects that provide light emission in the visible range without the introduction of any additional impurity. Our recent patented industry-capable (in terms of legislation concerns) and cost effective chemical solution approach (PCT WO 2016/038317 A1) led to mesospheric self-assembly hybrid ZnO-PAA nanomaterials (PAA = polyacrylic acid) that can be used as original nanostructured material which revealed to be efficient scatterer, resulting in a significant increase of the light-harvesting capability and emission performance. Herein, we will address the use of such self-assembly nanostructured ZnO materials as luminophor for LED devices. We will demonstrate how and why optimizations of (i) the set-up of the synthesis (reaction and washing steps), (ii) the molecular weight of the commercial polymers PAAH and PAANa (1800-250000) and the ratio of their mixture, (iii) cationic doping and (iv) core-shell structure lead to remarkable efficiency of white emission light of DS thin films in LED technology

Published
2018

3. Elaboration of ZnO nano-spheres as support of catalysts for polyol hydrogenolysis

Author

Daniele, S., Perret, N., Cornier, T., Omar, L., IRCELYON-C'Durable (CDURABLE), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and IRCELYON, ProductionsScientifiques

Subjects
[CHIM.CATA] Chemical Sciences/Catalysis, [SDE.ES] Environmental Sciences/Environmental and Society, [CHIM.CATA]Chemical Sciences/Catalysis, [SDE.ES]Environmental Sciences/Environmental and Society
Abstract

SSCI-VIDE+CDFA+SDA:NPR:TCO:LOM; International audience; ZnO is an oxide semiconductor which is used in a very extensive domains of industrial applications such as catalysis (e.g. tyres vulcanization), antibacterial coating, UV sun screen formulations… These applications require high specific surface area (nanometric materials) and the development of reproducible, efficient and easy-scalable industrial production processes. Our recent patented industry-capable (in terms of legislation concerns) and cost effective chemical solution approach (PCT WO 2016/038317 A1) led to mesospheric self-assembly hybrid ZnO-PAA nanomaterials (PAA = polyacrylic acid) that can be used as original nanostructured and very high surface area ZnO support (>100m²/g).Herein, we will address the use of such self-assembly nanostructured ZnO materials as support of Cu(0) NPs for the catalytic hydrogenolysis of glycerol into 1.2 propanediol. We will demonstrate how and why optimizations of (i) the set-up of the synthesis (reaction and washing steps), (ii) the molecular weight of the commercial polymers PAAH and PAANa (1800-250000) and the ratio of their mixture, (iii) the temperature of the calcination of the self-assembly hybrid ZnO-PAA system, (iv) the conditions of deposit and reduction steps (in relation with the Cu content) lead to Cu-ZnO with remarkable high surface area and better catalytic performance than commercial ones. We will also extend the chemistry of such catalytic system to others metals NPs such as Pt, Pd …

Published
2018

4. Sol-gel processing of hybrid ZnO quantum dots mesospheres for LED applications

Author

Daniele, S., Cornier, T., Omar, L., Masenelli, B., Aleksandra (Alexandra) Apostoluk, Chadeyron, G., Potdevin, A., IRCELYON-C'Durable (CDURABLE), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), INL - Spectroscopies et Nanomatériaux (INL - S&N), Institut des Nanotechnologies de Lyon (INL), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École Supérieure de Chimie Physique Électronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie de Clermont-Ferrand (ICCF), SIGMA Clermont (SIGMA Clermont)-Institut de Chimie du CNRS (INC)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), IRCELYON, ProductionsScientifiques, Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-École Centrale de Lyon (ECL), Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), and Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI]Engineering Sciences [physics], [SPI] Engineering Sciences [physics], [CHIM.CATA] Chemical Sciences/Catalysis, [SDE.ES] Environmental Sciences/Environmental and Society, [CHIM.CATA]Chemical Sciences/Catalysis, [SPI.MAT] Engineering Sciences [physics]/Materials, [SDE.ES]Environmental Sciences/Environmental and Society, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

SSCI-VIDE+CDFA+SDA:TCO:LOM; International audience; An important economic improvement of white light emitting diode is based on the use of lanthanide­freephosphors that are supposed to convert UV light into visible one, thanks to down­conversion (DS) process.ZnO nanoparticles (NPs) have aroused an increasing interest since they possess a variety of intrinsic defectsthat provide light emission in the visible range without the introduction of any additional impurity . However ,high photoluminescent quantum yield (PLQY), green/yellow emission, stable dispersion and easy scale–upprocess are expected for industrial applications. Li­doping and polymer surface modifications of ZnOnanoparticles are mainly used in order to reach high PLQY (>30%) but PLQY decay over few days, uses ofsophisticated polymers or multi­step reactions are the main issues for industrial implementation.Recently , we developed and patented an industry­capable (in terms of legislation concerns) and cost effectivechemical solution process to get unique mesospheric self­assembly hybrid ZnO system with intense (PLQY= 40­75%) and stable visible emission. This hierarchical structure revealed to be efficientscatterer , resulting in a significant increase of the light­harvesting capability . W e also demonstrate that theuse of mixture of commercial polyacrylic acid­based polymers can provide scalable amounts of ZnO NPsclear water suspensions that can be dried and dispersed again in water without compromising the functionalperformance (e.g. transparency and PLQY) of the final DS layer.Herein, we will address the effects of the ZnO NPs surface functionalization ­ such as nature, molecularweight, concentration, ratio of the P AA­based polymers and self­assembly process­ but also the impacts oftransition metal dopings (nature and content) on the enhancement of the efficiency and on the control of theemission colour light of DS thin films in LED technology . Some examples of LED prototypes will also bepresented.

Published
2017

5. Sol gel processing of hybrid ZnO quantum dots mesospheres forLED applications

Author

Daniele , S., Cornier , T., Omar , L., Masenelli , B., Apostoluk , A., Chadeyron , G., Potdevin , A., IRCELYON-Chimie durable: du fondamental à l'application ( CDFA ), Institut de recherches sur la catalyse et l'environnement de Lyon ( IRCELYON ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ) -Université Claude Bernard Lyon 1 ( UCBL ), and Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS )

Subjects
[ CHIM.CATA ] Chemical Sciences/Catalysis, [ SDE.ES ] Environmental Sciences/Environmental and Society
Abstract

SSCI-VIDE+CDFA+SDA:TCO:LOM; International audience; An important economic improvement of white light emitting diode is based on the use of lanthanide­freephosphors that are supposed to convert UV light into visible one, thanks to down­conversion (DS) process.ZnO nanoparticles (NPs) have aroused an increasing interest since they possess a variety of intrinsic defectsthat provide light emission in the visible range without the introduction of any additional impurity . However ,high photoluminescent quantum yield (PLQY), green/yellow emission, stable dispersion and easy scale–upprocess are expected for industrial applications. Li­doping and polymer surface modifications of ZnOnanoparticles are mainly used in order to reach high PLQY (>30%) but PLQY decay over few days, uses ofsophisticated polymers or multi­step reactions are the main issues for industrial implementation.Recently , we developed and patented an industry­capable (in terms of legislation concerns) and cost effectivechemical solution process to get unique mesospheric self­assembly hybrid ZnO system with intense (PLQY= 40­75%) and stable visible emissions (Figure 1). This hierarchical structure revealed to be efficientscatterer , resulting in a significant increase of the light­harvesting capability . W e also demonstrate that theuse of mixture of commercial polyacrylic acid­based polymers can provide scalable amounts of ZnO NPsclear water suspensions that can be dried and dispersed again in water without compromising the functionalperformance (e.g. transparency and PLQY) of the final DS layer.Herein, we will address the effects of the ZnO NPs surface functionalization ­ such as nature, molecularweight, concentration, ratio of the P AA­based polymers and self­assembly process­ but also the impacts oftransition metal dopings (nature and content) on the enhancement of the efficiency and on the control of theemission colour light of DS thin films in LED technology . Some examples of LED prototypes will also bepresented (Figure 2).

Published
2017

6. ZnO and its doped structures for the applications in LEDs, solar cells and gas sensors

Author

Apostoluk, Aleksandra, Zhang, Yu, Masenelli, Bruno, Daniele, S., LEBAIL, N., Cornier, T., Laboratoire des propriétés optiques des matériaux et applications ( LPOMA ), Université d'Angers ( UA ) -Centre National de la Recherche Scientifique ( CNRS ), INL - Spectroscopies et Nanomatériaux ( INL - S&N ), Institut des Nanotechnologies de Lyon ( INL ), École Centrale de Lyon ( ECL ), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon ( CPE ) -Institut National des Sciences Appliquées de Lyon ( INSA Lyon ), Université de Lyon-Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Centre National de la Recherche Scientifique ( CNRS ) -École Centrale de Lyon ( ECL ), Université de Lyon-Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Centre National de la Recherche Scientifique ( CNRS ), IRCELYON-Chimie durable: du fondamental à l'application ( CDFA ), Institut de recherches sur la catalyse et l'environnement de Lyon ( IRCELYON ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ), INL - Spectroscopies et Nanomatériaux (INL - S&N), Institut des Nanotechnologies de Lyon (INL), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), IRCELYON-C'Durable (CDURABLE), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), and Inl, Laboratoire INL UMR5270

Subjects
[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS]Physics [physics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS ] Physics [physics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], [SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [ SPI.MAT ] Engineering Sciences [physics]/Materials, [SPI.MAT] Engineering Sciences [physics]/Materials, [PHYS] Physics [physics], [SPI.MAT]Engineering Sciences [physics]/Materials, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, [ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [ SPI.OPTI ] Engineering Sciences [physics]/Optics / Photonic, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS
Abstract

26th-30th June 2017; International audience; no abstract

Published
2017

7. hybrid zno mesospheres for white led and photovoltaic markets

Author

Daniele, S., Cornier, T., Valette, A., Gautier, P., Omar, L., Aleksandra (Alexandra) Apostoluk, Masenelli, B., Zhu, Y., IRCELYON-Chimie durable: du fondamental à l'application ( CDFA ), Institut de recherches sur la catalyse et l'environnement de Lyon ( IRCELYON ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ), IRCELYON-C'Durable (CDURABLE), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), INL - Spectroscopies et Nanomatériaux (INL - S&N), Institut des Nanotechnologies de Lyon (INL), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and IRCELYON, ProductionsScientifiques

Subjects
[SPI]Engineering Sciences [physics], [ CHIM.CATA ] Chemical Sciences/Catalysis, [SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI] Engineering Sciences [physics], [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, [CHIM.CATA] Chemical Sciences/Catalysis, [SDE.ES] Environmental Sciences/Environmental and Society, [CHIM.CATA]Chemical Sciences/Catalysis, [SPI.MAT] Engineering Sciences [physics]/Materials, [SDE.ES]Environmental Sciences/Environmental and Society, [ SDE.ES ] Environmental Sciences/Environmental and Society, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

SSCI-VIDE+CDFA+SDA:TCO; International audience; An overwhelming economic improvement for white LED and photovoltaic (PV) markets is based on the use of lanthanide-free phosphors that are supposed to convert UV light into visible one, thanks to down-conversion (DS) process. ZnO nanoparticles (NPs) have aroused an increasing interest since they possess a variety of intrinsic defects that provide light emission in the visible range without the introduction of any additional impurity. However, high photoluminescent quantum yield (PLQY), stable green/yellow emission and easy scale–up process are expected for industrial applications. Li-doping and polymer surface modifications of ZnO nanoparticles are mainly used in order to reach high PLQY (> 30 %) but PLQY decay over few days, uses of sophisticated polymers or multi-step reactions are the main issues for industrial implementation. In collaboration with the company Lotus Synthesis, we developped and patented an industry-capable and cost effective chemical solution process to get unique mesospheric self-assembly hybrid ZnO system with intense (PLQY = 40-75 %) and stable visible emissions. We also demonstrate that the use of mixture of commercial polyacrylic acid-based polymers can provide large scale amounts of ZnO NPs clear water suspensions that can be dried and dispersed again in water without compromising the functional performance (e.g. transparency and PLQY) of the final DS layer. We will then address the effects of the ZnO NPs surface functionalization - such as nature, molecular weight, concentration, ratio of the PAA-based polymers and self-assembly process- on the enhancement of the efficiency of DS hybrid materials for LED and PV markets (or even cosmetics one).

Published
2016

8. Zinc oxide nanocomposites for solar energy conversion and LED applications

Author

Valette, A., Gautier, P., Omar, L., Cornier, T., Lebail, N., Zhu, Yao, Apostoluk, Aleksandra, Masenelli, Bruno, Daniele, S., IRCELYON-Ingéniérie, du matériau au réacteur ( ING ), Institut de recherches sur la catalyse et l'environnement de Lyon ( IRCELYON ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ), IRCELYON-Chimie durable: du fondamental à l'application ( CDFA ), Ecole Nationale de l'Aviation Civile ( ENAC ), Institut des Nanotechnologies de Lyon ( INL ), École Centrale de Lyon ( ECL ), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon ( CPE ) -Institut National des Sciences Appliquées de Lyon ( INSA Lyon ), Université de Lyon-Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire des propriétés optiques des matériaux et applications ( LPOMA ), Université d'Angers ( UA ) -Centre National de la Recherche Scientifique ( CNRS ), INL - Spectroscopies et Nanomatériaux ( INL - S&N ), Université de Lyon-Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Centre National de la Recherche Scientifique ( CNRS ) -École Centrale de Lyon ( ECL ), IRCELYON-C'Durable (CDURABLE), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), INL - Spectroscopies et Nanomatériaux (INL - S&N), Institut des Nanotechnologies de Lyon (INL), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and Inl, Laboratoire INL UMR5270

Subjects
[SPI]Engineering Sciences [physics], [SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI] Engineering Sciences [physics], [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, [ SPI ] Engineering Sciences [physics], [ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [ SPI.OPTI ] Engineering Sciences [physics]/Optics / Photonic, [SPI.MAT] Engineering Sciences [physics]/Materials, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

19th-23rd September 2016; International audience; An overwhelming economic improvement for white LED and photovoltaic (PV) markets is based on the use of lanthanide-free phosphors that are supposed to convert UV light into visible one, thanks to down-conversion (DS) process. ZnO nanoparticles (NPs) have aroused an increasing interest since they possess a variety of intrinsic defects that provide light emission in the visible range without the introduction of any additional impurity. However, high photoluminescent quantum yield (PLQY), stable green/yellow emission and easy scale–up process are expected for industrial applications. Li-doping and polymer surface modifications of ZnO nanoparticles are mainly used in order to reach high PLQY (>30%) but PLQY decay over few days, uses of sophisticated polymers or multi-step reactions are the main issues for industrial implementation. In collaboration with the company Lotus Synthesis, we developped and patented an industry-capable and cost effective chemical solution process to get unique mesospheric self-assembly hybrid ZnO system with intense (PLQY = 40-75%) and stable visible emissions. We also demonstrate that the use of mixture of commercial polyacrylic acid-based polymers can provide large scale amounts of ZnO NPs clear water suspensions that can be dried and dispersed again in water without compromising the functional performance (e.g. transparency and PLQY) of the final DS layer. We will then address the effects of the ZnO NPs surface functionalization - such as nature, molecular weight, concentration, ratio of the PAA-based polymers and self-assembly process- on the enhancement of the efficiency of DS hybrid materials for LED and PV markets.

Published
2016

10. Les effets du changement climatique dans le contexte des changements globaux : expertise collective sur l'estuaire de la Seine

Author

Massei, N., Bodilis, Josselin, Ducharne, Agnès, Laverman, A., Etcheber, H., Rochard, Eric, Ducrotoy, J.P., Morel, F., Cornier, T., Briand, Annie, Deldrève, Valérie, Laignel, Benoît, Souissi, S., Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Université Pierre et Marie Curie - Paris 6 (UPMC), Université de Bordeaux (UB), Ecosystèmes estuariens et poissons migrateurs amphihalins (UR EPBX), Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF), UNIVERSITE DE HULL GBR, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), GROUPE ORNITHOLOGIQUE NORMAND FRA, CONSERVATOIRE BOTANIQUE DE BAILLEUL FRA, Université de Lille, Aménités et dynamiques des espaces ruraux (UR ADBX), Collectivités territoriales, irstea, and Pas de financement

Subjects
SEINE ESTUAIRE, [SDE]Environmental Sciences
Abstract

[Departement_IRSTEA]Eaux [Departement_IRSTEA]Territoires [TR1_IRSTEA]QUASARE [TR2_IRSTEA]DTAM; Les estuaires, de par leur nature d'interface entre le domaine continentak et le domaine marin, sont des milieux particulièrement complexes, encore peu investigués par la recherche scientifique en matière de changement climatique. La présente expertise s'inscrit dans une démarche globale visant à faire un état des lieux des connaissances existant autour de la problèmatique des effets du changement climatique sur les fleuves et les grands estuaires, et en particulier sur l'estuaire de la Seine.

Published
2010

11. Rapport d'expertise collective Les effets du changement climatique dans le contexte des changements globaux. Expertise collective sur l'estuaire de Seine GIP Seine Aval

Author

Allain, S., Bodilis, J., Briand, A., Cornier, T., Agnès Ducharne, Jp Ducrotoy, Hervé Flanquart, Benoît Laignel, Laverman, A., Nicolas Massei, Frédéric Morel, Eric Rochard, Sami Souissi, Treyer, S., centre international de recherche sur l'environnement et le développement (CIRED), and Centre National de la Recherche Scientifique (CNRS)-École des Ponts ParisTech (ENPC)-École des hautes études en sciences sociales (EHESS)-AgroParisTech-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)

Subjects
[SDE]Environmental Sciences
Abstract

Expertise collective sur l'estuaire de Seine GIP Seine Aval

Published
2009

12. Données préliminaires sur la distribution, l'autoécologie et les impacts de Ludwigia peploides (Kunth) P.H. Raven (Jussie) et L. grandiflora (Michaux) Greuter et Burdet dans l'hydrosystème ligérien (France)

Author

Cornier, T., Lejas, D., Lambert, E., Dutartre, Alain, Berton, J.P., Haury, J., Université de Tours (UT), CEREA ANGERS, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), ENSA RENNES, Qualité des eaux (UR QEBX), Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF), and Université de Tours

Subjects
LOIRE, [SDE]Environmental Sciences, FRANCE
Abstract

The River Loire is colonised by Ludwigia peploides and Ludwigia grandiflora (jussies) from the estuary to the Orleans region. No studies have been carried out on jussies on the River Loire. It is although necessary to get data, particularly on the autoecology jussies in this ecosystem, and to evaluate the effects of plant clumps on their physical, chemical and floristical environment.; La Loire est colonisée par Ludwigia peploides et Ludwigia grandiflora de l'estuaire jusqu'à l'Orléanais. Très peu de données sont actuellement disponibles sur les jussies en Loire. Il est donc nécessaire d'acquérir des éléments notamment sur l'autoécologie des espèces dans cet écosystème particulier et d'évaluer les impacts des herbiers sur leur environnement physico-chimique et floristique (compétition).

Published
2002

13. Preliminary data on distribution, autoecology and effects of Ludwigia peploïdes and Ludwigia grandiflora communities in the river loire hydrosystem

Author

Berton, Jean-Pierre, Cornier, T., Lejas, D., Lambert, E., Dutartre, A., Haury, Jacques, Cités, Territoires, Environnement et Sociétés (CITERES), Centre National de la Recherche Scientifique (CNRS)-Université de Tours (UT), Berton, Jean-Pierre, and Centre National de la Recherche Scientifique (CNRS)-Université de Tours

Subjects
Ludwigia peploïdes, data, [SHS.ENVIR] Humanities and Social Sciences/Environmental studies, [SHS.ENVIR]Humanities and Social Sciences/Environmental studies, Ludwigia grandiflora, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2002

15. Improved Visible Emission from ZnO Nanoparticles Synthesized via the Co-Precipitation Method.

Author

Apostoluk A, Zhu Y, Gautier P, Valette A, Bluet JM, Cornier T, Masenelli B, and Daniele S

Abstract

Since ZnO nanoparticles (NPs) possess a variety of intrinsic defects, they can provide a wide spectrum of visible emission, without adding any impurity or any doping atoms. They are attracting more and more interest as a material for light sources and energy downshifting systems. However, defect emission with a high luminescence quantum efficiency (PL QY) is difficult to obtain. Here, we present the co-precipitation synthesis parameters permitting to attain ZnO NPs with highly visible PL QYs. We found that the nature of zinc precursors and alkaline hydroxide (KOH or LiOH) used in this method affects the emission spectra and the PL QY of the as-grown ZnO NPs. LiOH is found to have an advantageous effect on the visible emission efficiency when added during the synthesis of the ZnO NPs. More precisely, LiOH permits to increase the emission efficiency in the visible up to 13%. We discuss the effects of the nanoparticle size, the morphology and the surface stabilization on the enhancement of the luminescent emission efficiency. Various spectral contributions to the luminescent emission were also examined, in order to achieve a control of the defect emission to increase its efficiency.

Published
2023
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16. Vegetation shapes aboveground invertebrate communities more than soil properties and pollution: a preliminary investigation on a metal-contaminated site.

Author

Ozaki S, Fritsch C, Mora F, Cornier T, Scheifler R, and Raoul F

Subjects
Animals, Biodiversity, Ecosystem, Environmental Pollution, Plants, Invertebrates, Soil
Abstract

Pollution with trace metals (TM) has been shown to affect diversity and/or composition of plant and animal communities. While ecotoxicological studies have estimated the impact of TM contamination on plant and animal communities separately, ecological studies have widely demonstrated that vegetation is an important factor shaping invertebrate communities. It is supposed that changes in invertebrate communities under TM contamination would be explained by both direct impact of TM on invertebrate organisms and indirect effects due to changes in plant communities. However, no study has clearly investigated which would more importantly shape invertebrate communities under TM contamination. Here, we hypothesized that invertebrate communities under TM contamination would be affected more importantly by plant communities which constitute their habitat and/or food than by direct impact of TM. Our analysis showed that diversity and community identity of flying invertebrates were explained only by plant diversity which was not affected by TM contamination. Diversity of ground-dwelling (GD) invertebrates in spring was explained more importantly by plant diversity (27% of variation) than by soil characteristics including TM concentrations (8%), whereas their community identity was evenly explained by plant diversity and soil characteristics (2-7%). In autumn, diversity of GD invertebrates was only explained by plant diversity (12%), and their identity was only explained by soil characteristics (8%). We conclude that vegetation shapes invertebrate communities more importantly than direct effects of TM on invertebrates. Vegetation should be taken into account when addressing the impacts of environmental contamination on animal communities., (© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Published
2022
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17. How Do Richness and Composition of Diet Shape Trace Metal Exposure in a Free-Living Generalist Rodent, Apodemus sylvaticus.

Author

Ozaki S, Fritsch C, Valot B, Mora F, Cornier T, Scheifler R, and Raoul F

Subjects
Animals, Cadmium, Diet, Mice, Murinae, Soil Pollutants, Trace Elements
Abstract

Exposure of terrestrial mammals to chemical contaminants like trace metals (TMs) is considered to be mainly based on trophic transfer. Although relationships between TM transfer to animals and identity of contaminated food have been studied, the variation of the TM transfer with respect to diet diversity has been poorly documented. In this study, the oral exposure to TMs of wood mice Apodemus sylvaticus was investigated with respect to both the number of different items, i.e., diet richness, and the identity of items determined by metabarcoding from their stomach content, i.e., diet composition. The results showed that consuming Salicaceae, a known cadmium accumulator plant family, significantly increased exposure to cadmium and zinc. However, an increase in diet richness minimized exposure to cadmium when mice consumed Salicaceae items. This strongly suggests that TM accumulator items can lead to a high oral exposure to TMs but that such high exposure due to TM accumulator items can be " diluted" by diet richness due to other low accumulator items. Our results clearly indicate that both the presence of certain items in the diet and diet richness are important determinants of exposure to TMs in generalist animals, which matches the predictions of the " diet dilution hypothesis".

Published
2019
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18. Does pollution influence small mammal diet in the field? A metabarcoding approach in a generalist consumer.

Author

Ozaki S, Fritsch C, Valot B, Mora F, Cornier T, Scheifler R, and Raoul F

Abstract

Mammals are mainly exposed to trace metals (TMs) via consuming contaminated food. Several studies have demonstrated relationships between metal concentrations in food and in animal tissues. However, potential effects of TMs on feeding behaviour of wildlife have been poorly documented under field conditions, despite experimental evidence showing that food selection is impacted by resource contamination. Here, we test the hypothesis that the diet of a generalist rodent, the wood mouse (Apodemus sylvaticus), is altered by soil TM contamination in the field. Wood mice were sampled in spring and in autumn along a gradient of soil contamination in the surroundings of a former smelter located in northern France. Available resources in the field were inventoried, and the diet of the animals was analysed using DNA "metabarcoding." We demonstrated that (a) relationship between the resource richness in the diet and their richness in the field was altered by soil metal contamination. Wood mice specialized their diet along the gradient of soil metal contamination for both plant and invertebrate resources in spring. We also showed that (b) preference for Salicaceae, a plant family accumulating metals, decreased when soil contamination increased. These results suggest that environmental TM pollution could act as a force modulating trophic interactions in terrestrial food webs, thereby affecting wildlife exposure to contaminants by trophic route., (© 2018 John Wiley & Sons Ltd.)

Published
2018
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