Making and breaking the exciton in layered halide hybrid perovskites

ORAL

Abstract

Layered halide hybrid organic−inorganic perovskites (LHP) [1] have been the subject of intense investigation before the rise of three-dimensional (3D) halide perovskites and their impressive performance in solar cells. Recently, LHP have also been proposed as attractive alternatives for photostable solar cells [2] and revisited for light-emitting devices. LHP present inherent quantum and dielectric confinements imposed by the organic layers sandwiching the inorganic core, and computational approaches have successfully help rationalized their properties [4-6].
Here combine theoretical and spectroscopic studies inspect the various ingredients of LHP strong exciton binding energy and the ways to break the electron-hole pair [3,4]. In particular, we propose an elastic model providing design principles for future layered perovskites with optimized properties for photovoltaics or light emission [7].

1. L. Pedesseau et al., ACS Nano10, 9776 (2016).
2. H. Tsai et al., Nature536, 312 (2016), 536.
3. J.-C. Blancon et al., Science355, 1288 (2017).
4. M. Kepenekian et al., ACS Nano12, 11557 (2015).
5. M. D. Smith et al., Chem. Sci.8, 1960(2017).
6. D. Sapori, M. Kepenekian, L. Pedesseau, C. Katan, J. Even, Nanoscale8, 6369 (2016).[7] M. Kepenekian et al., Nano Lett. 18, 5603 (2018).

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Presenters

  • Mikael Kepenekian

    Institut des Sciences Chimiques de Rennes (ISCR), CNRS

Authors

  • Mikael Kepenekian

    Institut des Sciences Chimiques de Rennes (ISCR), CNRS

  • Boubacar Traore

    Institut des Sciences Chimiques de Rennes (ISCR), CNRS

  • Jean-Christophe Blancon

    Department of Chemical and Biomolecular Engineering, Rice University, Rice University

  • laurent pedesseau

    Institut FOTON, INSA Rennes

  • Wanyi Nie

    LANL

  • Constantinos Stoumpos

    Materials Science and Technology, University of Crete, Department of Materials Science and Technology, University of Crete

  • Mercouri Kanatzidis

    Department of Chemistry, Northwestern University, Chemistry, Northwestern University, Chemistry, Northwestern University, Evanston, IL 60208, Northwestern University, Materials Science Division, Argonne National Laboratory, Argonne National Laboratory

  • Jacky Even

    Institut FOTON, INSA Rennes, Institut foton, insa, INSA Rennes

  • Aditya D. Mohite

    Department of Materials Science and Nanoengineering, Rice University, Rice University

  • Sergei Tretiak

    LANL, Los Alamos National Laboratory

  • Claudine Katan

    Institut des Sciences Chimiques de Rennes (ISCR), CNRS, Universite de Rennes