Exciton absorption spectrum of thin CsPbI3 and Cs4PbI6 films

A method for preparing thin films of CsPbI 3 and Cs 4 PbI 6 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 CsPbI 3 compound is unstable and passes to the Cs 4 PbI 6 phase upon heatin...

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Bibliographic Details
Published inOptics and spectroscopy Vol. 112; no. 1; pp. 91 - 96
Main Authors Yunakova, O. N., Miloslavskii, V. K., Kovalenko, E. N.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 2012
Subjects
Condensed-Matter Spectroscopy
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Exciton Band
Symmetric Profile
Exciton Absorption Band
Spectral Position
Half Width
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Summary:A method for preparing thin films of CsPbI 3 and Cs 4 PbI 6 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 CsPbI 3 compound is unstable and passes to the Cs 4 PbI 6 phase upon heating at T ≥ 400 K.
ISSN:0030-400X
1562-6911
DOI:10.1134/S0030400X12010249