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Influence of compositional disorder on optical absorption processes in Cu6P(S1−xSex)5I crystals

Published online by Cambridge University Press:  31 January 2011

I. P. Studenyak ,
M. Kranjčec ,
Gy. Sh. Kovacs ,
I. D. Desnica-Franković ,
V. V. Panko  and
V. Yu. Slivka
I. P. Studenyak
Affiliation:
Uzhhorod State University, 46 Pidhirna St., Uzhhorod 294000, Ukraine
M. Kranjčec*
Affiliation:
University of Zagreb, Geotechnical Faculty Varaždin, 7 Hallerova Aleja, 42000 Varaždin, Republic of Croatia, and Ruđer BoškovićInstitute, 54 Bijenička Cesta, 10000 Zagreb, Republic of Croatia
Gy. Sh. Kovacs
Affiliation:
Uzhhorod State University, 46 Pidhirna St., Uzhhorod 294000, Ukraine
I. D. Desnica-Franković
Affiliation:
Ruđer BoškovićInstitute, 54 Bijenička Cesta, 10000 Zagreb, Republic of Croatia
V. V. Panko
Affiliation:
Uzhhorod State University, 46 Pidhirna St., Uzhhorod 294000, Ukraine
V. Yu. Slivka
Affiliation:
Uzhhorod State University, 46 Pidhirna St., Uzhhorod 294000, Ukraine
*
a)Address all correspondence to this author. e-mial: [email protected]
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Abstract

The fundamental absorption edge of Cu6P(S0.6Se0.4)5I and Cu6P(S0.4Se0.6)5I crystals was studied in the 77–320 K temperature range where no phase transitions were revealed by optical techniques. The temperature behavior of the exponential Urbach absorption edge in Cu6P(S0.6Se0.4)5I and Cu6P(S0.4Se0.6)5I crystals was analyzed. The effect of compositional disorder upon the Urbach edge parameters, parameters of exciton-phonon interaction, and lattice parameters in Cu6P(S1−xSex)5I, 0 ≤ x ≤ 1, crystals was studied. The effect of various types of disordering upon the optical absorption processes in Cu6P(S1−xSex)5I crystals is discussed.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 6 , June 2001 , pp. 1600 - 1608
Copyright
Copyright © Materials Research Society 2001

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