Exciton absorption spectrum of thin CsPbI3 and Cs4PbI6 films
- 27 January 2012
- journal article
- Published by Pleiades Publishing Ltd in Optics and Spectroscopy
- Vol. 112 (1), 91-96
- https://doi.org/10.1134/s0030400x12010249
Abstract
A method for preparing thin films of CsPbI3 and Cs4PbI6 complex compounds has been developed. Their absorption spectrum is investigated in the energy range of 2–6 eV at temperatures from 90 to 500 K. It is found that the CsPbI3 compound is unstable and passes to the Cs4PbI6 phase upon heating at T ≥ 400 K.Keywords
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