Effect of isomorphic atom substitution on the refractive index and oscillator parameters of TlInS2xSe2(1-x) (0.25 <= x <= 1) layered mixed crystals

Gasanly N.

CRYSTAL RESEARCH AND TECHNOLOGY, vol.45, no.11, pp.1141-1144, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 11
  • Publication Date: 2010
  • Doi Number: 10.1002/crat.201000294
  • Journal Name: CRYSTAL RESEARCH AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1141-1144
  • Keywords: optical properties, refractive index, semiconductors, OPTICAL-CONSTANTS, TLINS2, ABSORPTION
  • Middle East Technical University Affiliated: Yes

Abstract

The optical properties of TlInS2xSe2(1-x) mixed crystals (0.25 <= x <= 1) have been studied at room temperature through the transmittance and reflectivity measurements in the wavelength range of 400-1100 nm. The spectral dependence of the refractive index for all compositions of studied crystals were obtained. The dispersion of the refractive index is discussed in terms of the Wemple-DiDomenico single-effective-oscillator model. The compositional dependencies of refractive index dispersion parameters: oscillator energy, dispersion energy and zero-frequency refractive index were revealed. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim