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This book covers the benefits of controlling perovskite nanostructures for enhancing the properties of solar cells. It describes different aspects of hybrid and inorganic perovskite nanostructures including their synthesis, and the optical and physical properties that result from the various nanostructures. A summary of the technology from the controlled nanostructures rounds out this important topic, bridging the theory with application.

Perovskite.

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

nanoparticles --- metal --- semiconductor --- alloy --- oxide --- perovskite

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

Science: general issues --- nanoparticles --- metal --- semiconductor --- alloy --- oxide --- perovskite

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Dans le contexte énergétique actuel, le développement de technologies de production d’énergies renouvelables, telles que les panneaux photovoltaïques, est une nécessité. Dans ce mémoire, l’attention s’est portée sur les cellules photovoltaïques à base de pérovskite et plus précisément sur les composés MAPbI3, MAPbI3-xClx et RbCsMAFAPbI3-xBrx (MA = CH3NH3+, FA= CH(NH2)2+). Ces matériaux ont été déposés par spray pyrolyse ultrasonique (USP), assemblés en cellules et leur efficacité a été comparée aux cellules obtenues par spin coating, technique de dépôt de films généralement utilisée dans la littérature, l’objectif du mémoire étant de valider la transposabilité de fabrication des cellules photovoltaïques à base de pérovskite vers des techniques de mise en œuvre compatibles avec une production à l’échelle industrielle en roll-to-roll Le dépôt de pérovskite par USP a été optimisé en jouant sur différents paramètres comme la concentration en précurseurs, le débit de solution, la température du substrat, la température de stabilisation ou encore le lissage par un anti-solvant après dépôt. Si le lissage anti-solvant a prouvé son utilité en spin-coating afin d’améliorer l’efficacité des cellules, il n'a pu être transféré avec succès en USP. A l’issue de cette campagne d’optimisations, les cellules photovoltaïques constituées des meilleurs films pérovskite par USP (sans lissage) ont donné une efficacité de conversion moyenne de 3% pour MAPbI3 (cellule champion : 4,2%) et 7,4% pour RbCsMAFAPbI3-xBrx (cellule champion : 8,9%). La pérovskite MAPbI3-xClx a donné des efficacités proches de 0%. A titre de comparaison, les dépôts par spin coating (avec lissage) ont donné des performances photovoltaïques moyennes de 4,5% pour MAPbI3 (cellule champion : 7,1%), 12,7% pour RbCsMAFAPbI3-xBrx (cellule champion : 14,9%) et 2,5% pour MAPbI3-xClx (cellule champion : 3,5%). Le dépôt de la pérovskite par spray pyrolyse ultrasonique ne permet donc pas, avec nos optimisations actuelles, d’égaler les efficacités de cellules préparées par spin coating mais est en bonne voie pour aboutir à terme à une production industrielle des panneaux photovoltaïques à base de pérovskite. In the current energy context, the development of renewable energy technologies, such as photovoltaic panels, is necessary. In this master thesis, a special attention was paid on perovskite-based photovoltaic cells and more specifically on MAPbI3, MAPbI3-xClx and RbCsMAFAPbI3-xBrx (MA = CH3NH3+, FA = CH(NH2)2+). These compounds were deposited by ultrasonic spray pyrolysis (USP), assembled in cells and their efficiency was compared to cells obtained by spin coating, usually used in the literature. The goal of this work is to validate the manufacturing process transposition towards roll-to-roll industrial production. The perovskite deposition by USP has been optimized by varying different parameters such as the precursor concentration, the solution flow, the substrate temperature, the stabilization temperature or the smoothing with an anti-solvent after deposition. If anti-solvent smoothing has proven to improve the cell efficiency by spin coating, it could not be successfully transferred to USP process. From our optimization work, the best photovoltaic cells by USP (without smoothing) gave an average conversion efficiency of 3% for MAPbI3 (champion cell: 4.2%) and 7.4 % for RbCsMAFAPbI3-xBrx (champion cell: 8.9%). The MAPbI3-xClx perovskite gave efficiencies close to 0%. In comparison, the best cells by spin coating (with smoothing) gave average photovoltaic efficiency of 4.5% for MAPbI3 (champion cell: 7.1%), 12.7% for RbCsMAFAPbI3-xBrx (champion cell: 14,9%) and 2.5% for MAPbI3-xClx (champion cell: 3.5%). At this stage, the perovskite deposition by ultrasonic spray pyrolysis, therefore, does not allow to reach the efficiencies of cells prepared by spin coating but is on track to achieve large-scale production of perovskite solar cells.

pérovskite --- USP --- cellule photovoltaïque --- multi-cations --- anti-solvant --- Physique, chimie, mathématiques & sciences de la terre > Chimie

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

semiconductor nanocrystals --- quantum dots --- colloids --- perovskite --- phosphide --- photocatalysis --- infrared photodetectors --- laser patterning