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Title: Optical analysis of TlInS{sub 2x}Se{sub 2(1−x)} mixed crystals

The ellipsometry measurements were carried out on TlInS{sub 2x}Se{sub 2(1−x)} mixed crystals in the spectral range of 1.5–6.0 eV at room temperature. The refractive index, extinction coefficient, real and imaginary parts of dielectric function were found as a result of ellipsometric measurements. The energies of interband transitions (critical point energies) of the TlInS{sub 2x}Se{sub 2(1−x)} mixed crystals were obtained by means of the second derivative of the real and imaginary parts of dielectric function. The variation of the critical point energies with the isomorphic anion substitution that is sulfur for selenium atoms was established.
Authors:
 [1]
  1. Department of Material Science and Engineering, Cankaya University, Ankara 06810 (Turkey)
Publication Date:
OSTI Identifier:
22275681
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANIONS; CONCENTRATION RATIO; CRYSTALS; DIELECTRIC MATERIALS; ELLIPSOMETRY; ENERGY-LEVEL TRANSITIONS; INDIUM SULFIDES; PERMITTIVITY; REFRACTIVE INDEX; SELENIUM; SULFUR; TEMPERATURE RANGE 0273-0400 K; THALLIUM SELENIDES