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Proceedings Paper

Vibronic interactions in CsPbCl3xBr3(1-x) (x=0...1) and CsPbCl2J crystals
Author(s): M. S. Pidzyrailo; S. V. Miagkota; Anatolii S. Voloshinovskii; Myroslava V. Kutsyk
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Paper Abstract

Low temperature (T equals 5...80 K) reflection spectra at fundamental absorption edge and luminescence spectra have been measured for CsPbCl3xBr3(1-x) (x equals 0...1) and CsPbCl2J crystals. Some exciton parameters were estimated. Namely, the exciton binding energy for the crystal row varies from 71 to 31 meV and the ground exciton radius does in range 10.4 - 15.7 angstrom. It was found that disordering effects were insignificant for the above mentioned solid solutions. The exciton nature change condition is not satisfied in case of halide replacing. Relaxation of the intrinsic electron excitation for the investigated crystals excited in range of fundamental absorption occurs through the following ways. It is the free and trapped exciton emission and also their scattering on LO-phonons for CsPbX3 (X equals Cl,Br) single crystals, the trapped exciton emission for the CsPbCl3xBr3(1- x) (x equals 0...1) solid solutions and the trapped and self-trapped exciton emission for CsPbCl2J crystals.

Paper Details

Date Published: 4 February 1997
PDF: 4 pages
Proc. SPIE 2967, Optical Inorganic Dielectric Materials and Devices, (4 February 1997); doi: 10.1117/12.266555
Show Author Affiliations
M. S. Pidzyrailo, Lviv Ivan Franko State Univ. (Ukraine)
S. V. Miagkota, Lviv Ivan Franko State Univ. (Ukraine)
Anatolii S. Voloshinovskii, Lviv Ivan Franko State Univ. (Ukraine)
Myroslava V. Kutsyk, Lviv Ivan Franko State Univ. (Ukraine)

Published in SPIE Proceedings Vol. 2967:
Optical Inorganic Dielectric Materials and Devices
Andris Krumins; Donats K. Millers; Andris R. Sternberg; Janis Spigulis, Editor(s)

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