Hybrid perovskites from a solid state physics perspective

Jacky Even^a, Laurent Pedesseau^a, Daniel Sapori^a, Mikael Kepenekian^b, Claudine Katan^b, Emmanuelle Deleporte^c, Jean-Sébastien Lauret^c

^aFonctions Optiques pour les Technologies de l’Information (FOTON), Institut National des Sciences Appliquées (INSA) de Rennes, CNRS, UMR 6082, Rennes, France

^bInstitut des Sciences Chimiques de Rennes, CNRS, Université de Rennes 1, Ecole Nationale Supérieure de Chimie de Rennes, INSA Rennes, Rennes, France

^cLaboratoire Aimé Cotton,, Ecole Normale Supérieure de Cachan, CNRS, Université Paris-Sud, Bât 505 Campus d’Orsay, 91405 Orsay, France, France

International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics 2015 (HOPV15)

Roma, Italy, 2015 May 11th - 13th

Organizer: Filippo De Angelis

Invited Speaker, Jacky Even, presentation 029
Publication date: 5th February 2015

3D hybrid perovskites (HOP) are currently superstar materials for photovoltaics and attract increasing attention of the scientific community. Recently, they also revealed attractive photoluminescence, as it is already well known for 2D layered HOP. Our modelling approach is based on concepts of solid-state physics originally developed for conventional semiconductors and nanostructures, mixing both DFT and empirical modelling. The broad light-harvesting abilities and attractive transport properties of 3D HOP can be related to the multi-bandgap and multi-valley nature of their band structure. Giant spin-orbit coupling in the conduction band is a specific property of this new class of semiconductors. Perturbations related to lattice distortion and loss of inversion symmetry at low temperature, are studied. Concept of Wannier exciton is reviewed for both 3D and 2D layered HOP. A novel approach for dielectric confinement will be described. Concepts of quantum confinement and applicability of effective masses coupled to envelope functions are analyzed for 3D heterostructures and 2D layered HOP.

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