Optical properties of TlGaxIn1-xS2 layered mixed crystals (0 <= x <= 1) I. Composition- and temperature-tuned energy band gap

HASANLI N.

JOURNAL OF ALLOYS AND COMPOUNDS, vol.498, no.2, pp.148-151, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 498 Issue: 2
  • Publication Date: 2010
  • Doi Number: 10.1016/j.jallcom.2010.03.137
  • Journal Name: JOURNAL OF ALLOYS AND COMPOUNDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.148-151
  • Middle East Technical University Affiliated: Yes

Abstract

Optical properties of the TlGaxIn1-xS2 mixed crystals (0 <= x <= 1) have been studied by means of transmission and reflection measurements in the wavelength range of 400-1100 nm. The optical indirect band gap energies were determined through the analysis of the absorption data. It was found that the energy band gaps increase with increasing of gallium atoms content in the TlGaxIn1-xS2 mixed crystals. From the transmission measurements carried out in the temperature range of 10-300K, the rates of change of the indirect band gaps with temperature were determined for the different compositions of mixed crystals studied. (c) 2010 Elsevier B.V. All rights reserved.