Evidence and implications for exciton dissociation in lead halide perovskites
1 Max Planck-Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, 22761 Hamburg, Germany
2 Department of Chemistry, Universität Hamburg, Martin-Luther-King platz 6, Germany
3 I. Institut für Theoretische Physik, Universität Hamburg, Jungiusstraße 9, 20355 Hamburg, Germany
4 The Hamburg Center for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany
5 Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
6 The Departments of Chemistry and Physics, University of Toronto, 80 St. George Street, Toronto, M5S 3H6 Canada
* Corresponding author: email@example.com
Published online: 16 April 2019
We have employed ultrafast transient-grating and two- dimensional electronic spectroscopy to probe dynamics of photo-excited CH3NH3PbI3 thin films with 16-fs temporal resolution. We distinctly capture the 30-fs decay of excitons, weakly coupled to the phonons.
© The Authors, published by EDP Sciences, 2019
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