Influence of Chemical Engineering, Photodoping and Lattice Distortions on the Optoelectronic Properties of Multilayered Perovskites
jacky even a, siraj sidhik b, wenbin li b, hao zhang b, boubacar traoré c, claudio quarti d, alia Skorokhod e, nicolas mercier e, wei li f, mercouri kanatzidis g, jean-christophe blancon b, aditya mohite b, claudine katan c
a Univ Rennes, INSA Rennes, CNRS, Institut FOTON (Fonctions Optiques pour les Technologies de l'informatiON ) - UMR 6082, F-35000 Rennes, France
b Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, Main St., Houston, United States
c Univ Rennes, ENSCR, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
d Laboratory for Chemistry of Novel Materials, University of Mons, Belgium, Place du Parc, 20, Mons, Belgium
e University of Angers, CNRS UMR 6200, MOLTECH-Anjou, Linear Conjugated Systems, UFR Sciences, 2 Bd Lavoiser, Angers, 49045, France
f Nankai University, 94 Weijin Road, Nankai District, Tianjin 300071, China
g Northwestern University
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
València, Spain, 2022 May 19th - 25th
Organizers: Pablo Docampo, Eva Unger and Elizabeth Gibson
Invited Speaker Session, jacky even, presentation 049
Publication date: 20th April 2022

The presentation will give an insight into new results on the interplay between structural, interfacial and optoelectronic properties in 2D multilayered halide perovskites, either in Ruddlesden Popper (RP) or Dion Jacobson (DJ) structure. We will see that the funneling of electronic carriers to the 2D crystal edges, important for ionization of electron-hole pairs in 2D RP phases, is also at work in bromide perovskites. Continuous and ultrafast photodoping will be further discussed, demonstrating their strong impact on the structural and carrier transport properties of DJ perovskites. It will also be illustrated how chemical engineering allows tuning the optoelectronic properties of 2D perovskites. Finally, we will introduce a DFT-based semi-empirical methodology to simulate band alignments, interface or surface dipoles and dielectric mismatches in 2D multilayered perovskites.



At ISCR, FOTON and MOLTECH-Anjou the work was mainly supported by the Agence Nationale pour la Recherche (MORELESS project).

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