Print Email Facebook Twitter Inverse Opal Photonic Nanostructures for Enhanced Light Harvesting in CH3NH3PbI3 Perovskite Solar Cells Title Inverse Opal Photonic Nanostructures for Enhanced Light Harvesting in CH3NH3PbI3 Perovskite Solar Cells Author Daem, Nathan (Université de Liège) Mayer, Alexandre (University of Namur) Spronck, Gilles (Université de Liège) Colson, Pierre (Université de Liège) Loicq, J.J.D. (TU Delft Spaceborne Instrumentation; Université de Liège) Henrist, Catherine (Université de Liège) Cloots, Rudi (Université de Liège) Maho, Anthony (Université de Liège) Lobet, Michael (University of Namur; Université de Liège) Date 2022 Abstract Light management strategies using photonic crystals have been proven to efficiently improve light harvesting and subsequently conversion efficiency of various optoelectronic devices. This study focuses on 3D inverse opal CH3NH3PbI3 photoanodes in perovskite solar cells from a combined numerical and experimental approach. Varying the pore size and the layer thickness in numerical simulations, we first determined theoretical optimum from a purely optical point of view. Corresponding 3D inverse opal photonic nanostructures were then fabricated through spin-coating protocols using polystyrene nanospheres of various diameters as hard templating sacrificial agents. It demonstrates how the photonic nanostructuration of the perovskite layer impacts both optical and electronic properties of experimental samples. Regarding the individual 3D inverse opal perovskite layers, an optimum of light absorption is reached for an ∼500 nm diameter pore photonic nanostructure, with a photonic absorption enhancement as high as 16.1% compared to an unstructured compact benchmark. However, in addition to electronic-related countereffects, local light absorption in the hole transporting material is observed in assembled solar cells, weakening the light management benefits of the perovskite layer nanostructuration to only ∼3% photonic enhancement. Subject CH3NH3PbI3 perovskitephotonic crystals3D inverse opal To reference this document use: http://resolver.tudelft.nl/uuid:6e44024b-f909-46d5-aab6-4948d5963fae DOI https://doi.org/10.1021/acsanm.2c03274 Embargo date 2023-07-01 ISSN 2574-0970 Source ACS Applied Nano Materials, 5 (9), 13583-13593 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 Nathan Daem, Alexandre Mayer, Gilles Spronck, Pierre Colson, J.J.D. Loicq, Catherine Henrist, Rudi Cloots, Anthony Maho, Michael Lobet Files PDF acsanm.2c03274_1.pdf 4.21 MB Close viewer /islandora/object/uuid:6e44024b-f909-46d5-aab6-4948d5963fae/datastream/OBJ/view