CH3NH3PbI3 perovskite single crystals: surface photophysics and their interaction with the environment

Here we identify structural inhomogeneity on a micrometer scale across the surface of a CH3NH3PbI3 perovskite single crystal. At the crystal edge a local distortion of the crystal lattice is responsible for a widening of the optical bandgap and faster photo-carrier recombination. These effects are inherently present at the edge of the crystal, and further enhanced upon water intercalation, as a preliminary step in the hydration of the perovskite material.


Published in:
Chemical Science, 6, 12, 7305-7310
Year:
2015
Publisher:
Cambridge, Royal Soc Chemistry
ISSN:
2041-6520
Laboratories:




 Record created 2016-02-16, last modified 2018-03-17


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