Urbach's Rule and Optical Properties for TlGaS2
Authors : Aytunç Ateş, Bekir Gürbulak, Muhammet Yildirim
Pages : 127-132
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Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :Absorption measurements were carried out on TlGaS2 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 TlGaS2 is 19.7 \pm 5 meV.Keywords : Turk. J. Phys., 26, (2002), 127-132. Full text: pdf Other articles published in the same issue: Turk. J. Phys., vol.26, iss.2.