Bright triplet excitons in caesium lead halide perovskites

Michael A. Becker, Roman Vaxenburg, Georgian Nedelcu, Peter C. Sercel, Andrew Shabaev, Michael J. Mehl, John G. Michopoulos, Samuel G. Lambrakos, Noam Bernstein, John L. Lyons, Thilo Stöferle, Rainer F. Mahrt, Maksym V. Kovalenko (), David J. Norris (), Gabriele Rainò () and Alexander L. Efros ()
Additional contact information
Michael A. Becker: IBM Research – Zurich
Roman Vaxenburg: Computational Materials Science Center, George Mason University
Georgian Nedelcu: Institute of Inorganic Chemistry, ETH Zurich
Peter C. Sercel: T. J. Watson Laboratory of Applied Physics, California Institute of Technology
Andrew Shabaev: Computational Materials Science Center, George Mason University
Michael J. Mehl: US Naval Academy
John G. Michopoulos: Center for Computational Materials Science, Naval Research Laboratory
Samuel G. Lambrakos: Center for Computational Materials Science, Naval Research Laboratory
Noam Bernstein: Center for Computational Materials Science, Naval Research Laboratory
John L. Lyons: Center for Computational Materials Science, Naval Research Laboratory
Thilo Stöferle: IBM Research – Zurich
Rainer F. Mahrt: IBM Research – Zurich
Maksym V. Kovalenko: Institute of Inorganic Chemistry, ETH Zurich
David J. Norris: Optical Materials Engineering Laboratory, ETH Zurich
Gabriele Rainò: IBM Research – Zurich
Alexander L. Efros: Center for Computational Materials Science, Naval Research Laboratory

Nature, 2018, vol. 553, issue 7687, 189-193

Abstract: The lowest-energy exciton state in caesium lead halide perovskite nanocrystals is shown to be a bright triplet state, contrary to expectations that lowest-energy excitons should always be dark.

Date: 2018
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DOI: 10.1038/nature25147

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