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Title: Effects of post-deposition heat treatment on the optical characteristics of ZnTe thin films

Zinc telluride (ZnTe) thin films (d=0.15 {mu}m - 2.40 {mu}m) were deposited by quasi-closed volume technique under vacuum. X-ray diffraction patterns indicated that the films are polycrystalline and have a zinc blende structure. After a heat treatment, a significant increase of peak intensities, corresponding to (220) plane take place. The heat treatment determines a greater dispersion of crystallite height as compare to the not treated once. After heat treatment the transmission coefficient strongly decreases. The values of optical bandgap ranged between 1.95 eV and 2.40 eV, due to heat treatment.
Authors:
;  [1] ;  [2]
  1. Faculty of Physics Al. I. Cuza University, 11 Carol I Blvd. Iasi, R-700506 (Romania)
  2. Faculty of Mechanical Engineering, 'Stefan cal Mare' University, 9 Universitatii Str., 720225 Suceava (Romania)
Publication Date:
OSTI Identifier:
21057230
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 899; Journal Issue: 1; Conference: 6. international conference of the Balkan Physical Union, Istanbul (Turkey), 22-26 Aug 2006; Other Information: DOI: 10.1063/1.2733382; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPARATIVE EVALUATIONS; CUBIC LATTICES; DEPOSITION; ENERGY GAP; EV RANGE; HEAT TREATMENTS; POLYCRYSTALS; SEMICONDUCTOR MATERIALS; THIN FILMS; X-RAY DIFFRACTION; ZINC TELLURIDES