Urbach's Rule and Optical Properties for TlGaS_{2}

Authors

AYTUNÇ ATEŞ
BEKİR GÜRBULAK
MUHAMMET YILDIRIM
SEYDİ DOĞAN
SONGÜL DUMAN
TACETTİN YILDIRIM
SEBAHATTİN TÜZEMEN

DOI

-

Abstract

Absorption measurements were carried out on TlGaS_{2} sample in the temperature range between 10 and 320 K in 10 K steps. There is an abrupt change in the Urbach energy at 180 K and 280 K and steepness parameter at 120 K and 220 K .Obtained from the changing of the Urbach energy, these may be phase transition temperatures. The phonon energies calculated for TlGaS_{2} is 19.7 \pm 5 meV.

First Page

127

Last Page

132

Recommended Citation

ATEŞ, AYTUNÇ; GÜRBULAK, BEKİR; YILDIRIM, MUHAMMET; DOĞAN, SEYDİ; DUMAN, SONGÜL; YILDIRIM, TACETTİN; and TÜZEMEN, SEBAHATTİN (2002) "Urbach's Rule and Optical Properties for TlGaS_{2}," Turkish Journal of Physics: Vol. 26: No. 2, Article 7. Available at: https://journals.tubitak.gov.tr/physics/vol26/iss2/7