The absorption spectra of thin films of ternary compounds in the RbI–PbI2 system

The absorption spectra of thin films of ternary compounds in the RbI–PbI2 system

Formation of compounds RbPbI3 and Rb4PbI6 in the RbI–PbI2 system is revealed, and their absorption spectra are investigated in an energy interval of 2–6 eV and at temperatures from 90 to 500 K. It is established that the low-frequency exciton excitations are localized in PbI6 4− structural elements...

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Veröffentlicht in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2012-10, Vol.38 (10), p.943-947
Hauptverfasser: Yunakova, O. N., Miloslavskii, V. K., Kovalenko, E. N., Ksenofontova, E. V.
Format: Artikel
Sprache:eng
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Absorption spectra
Excitation spectra
Intervals
Joining
Low temperature physics
Structural members
Thin films
Three dimensional
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container_issue 10
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container_title Low temperature physics (Woodbury, N.Y.)
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creator Yunakova, O. N.
Miloslavskii, V. K.
Kovalenko, E. N.
Ksenofontova, E. V.
description Formation of compounds RbPbI3 and Rb4PbI6 in the RbI–PbI2 system is revealed, and their absorption spectra are investigated in an energy interval of 2–6 eV and at temperatures from 90 to 500 K. It is established that the low-frequency exciton excitations are localized in PbI6 4− structural elements of the crystal lattice, they are classified as excitons of intermediate coupling and are of a three-dimensional character in RbPbI3 and a quasi-two-dimensional one in Rb4PbI6.
doi_str_mv 10.1063/1.4758777
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subjects Absorption spectra
Excitation spectra
Intervals
Joining
Low temperature physics
Structural members
Thin films
Three dimensional
title The absorption spectra of thin films of ternary compounds in the RbI–PbI2 system
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