Some optical and electrical measurements on Cs3Bi2Br9 single crystals

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1983 English Publisher:WileyJournal:physica status solidi (b), volume 115, pages 267-271 (issn: 0370-1972, eissn: 1521-3951,

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Authors: C. W. M. Timmermans; S. O. Cholakh; R. L. van der Woude; G. Blasse;

doi: 10.1002/pssb.2221150130

Some optical and electrical measurements on Cs3Bi2Br9 single crystals

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Abstract

AbstractThe optical properties of Cs3Bi2Br9 in the spectral range 2 to 10 eV are reported and discussed. The results are interpreted with the aid of the calculated band scheme of CsPbBr3. The band edge is situated at 2.707 eV and is ascribed to a transition from the bismuth (6s) valence band to the bismuth (6p) conduction band. The intracationic exciton transition, which takes place at 2.699 eV, is allowed but with a low transition probability. Photoconductivity measurements reveal that the electrons are the more mobile charge carriers.

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