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Reversible air-induced optical and electrical modulation of methylammonium lead bromide (MAPbBr(3)) single crystals
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2017 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 111, no 10, article id 103904Article in journal (Refereed) Published
Abstract [en]

The photoluminescence (PL) variations of organic-inorganic hybrid lead halide perovskites in different atmospheres are well documented, while the fundamental mechanism still lacks comprehensive understandings. This study reports the reversible optical and electrical properties of methylammonium lead bromide (MAPbBr(3) or CH3NH3PbBr3) single crystals caused by air infiltration. With the change in the surrounding atmosphere from air to vacuum, the PL intensity of perovskite single crystals decreases, while the conductivity increases. By means of first-principles computational studies, the shallow trap states are considered as key elements in PL and conductivity changes. These results have important implications for the characterization and application of organic-inorganic hybrid lead halide perovskites in vacuum.

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American Institute of Physics (AIP), 2017. Vol. 111, no 10, article id 103904
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URN: urn:nbn:se:kth:diva-215370DOI: 10.1063/1.5001843ISI: 000410059200043Scopus ID: 2-s2.0-85029292807OAI: oai:DiVA.org:kth-215370DiVA, id: diva2:1148207
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QC 20171010

Available from: 2017-10-10 Created: 2017-10-10 Last updated: 2017-10-10Bibliographically approved

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Zheng, Lirong
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