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Title: Effect of annealing on structural and optical properties of sol-gel prepared Cd doped ZnO thin films

Zn{sub 1-x}Cd{sub x}O thin films have been prepared by sol-gel spin coating method. Structural analysis shows that the Cd substitution into the wutrzite ZnO lattice is achieved up to about 20 mol %. The optical band gap is found to decrease with the increase in Cd content. Increase in the annealing temperature up to a certain critical temperature leads to band gap narrowing because of the proper substitution of Zn by Cd and thereafter the band gap increases due to Cd re-evaporation from the lattice sites. This critical temperature lowers down with the increase in Cd doping concentration. The resistivity decreases with the increase in Cd content and increases with the increase in annealing temperature.
Authors:
;  [1] ;  [2]
  1. Department of Physics, Indian Institute of Technology Madras, Chennai-600036 (India)
  2. School of Advanced Sciences, VIT University, Vellore-632014 (India)
Publication Date:
OSTI Identifier:
22490384
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 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; ANNEALING; CADMIUM OXIDES; CONCENTRATION RATIO; CRITICAL TEMPERATURE; CUBIC LATTICES; DOPED MATERIALS; ENERGY GAP; EVAPORATION; OPTICAL PROPERTIES; SOL-GEL PROCESS; SPIN-ON COATING; TEMPERATURE DEPENDENCE; THIN FILMS; ZINC OXIDES