Annealing Effects on the Properties of Chemically Deposited CdS Thin Films at Ambient Condition

Authors

  • G. Mustafa Department of Physics,Jagannath University, Dhaka-1100
  • M.R.I. Chowdhury Department of Physics, University of Dhaka, Dhaka 1000
  • D.K. Saha Materials Science Division, Atomic Energy Centre, Dhaka 1000
  • S. Hussain Department of Physics, University of Dhaka, Dhaka 1000
  • O. Islam Department of Physics, University of Dhaka, Dhaka 1000

DOI:

https://doi.org/10.3329/dujs.v60i2.11536

Keywords:

Chemically Deposited CdS, XRD, SEM, Optical Properties

Abstract

Chemically-deposited CdS thin films have been investigated using various techniques to discuss annealing effects on the structural, morphological, optical and electrical properties of the films. It has been observed from XRD that the deposited layers are mainly consisting of CdS phase. After annealing, metastable cubic phase was transformed into stable hexagonal phase. The average grain sizes were found to increase and the lattice constant, micro-strain and dislocation density were found to decrease after annealing. Optical absorption measurements show that band gap is observed to be 2.42 eV for as deposited and be 2.27 eV upon heat treatment at 673 K for one hour in air. The conductivity of this film has been determined by I-V measurement and observed to increase with increase of temperature. The activation energy of electrical conductivity of this film is also determined.

DOI: http://dx.doi.org/10.3329/dujs.v60i2.11536

Dhaka Univ. J. Sci. 60(2): 283-288, 2012 (July)

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Published

2012-08-05

How to Cite

Mustafa, G., Chowdhury, M., Saha, D., Hussain, S., & Islam, O. (2012). Annealing Effects on the Properties of Chemically Deposited CdS Thin Films at Ambient Condition. Dhaka University Journal of Science, 60(2), 283–288. https://doi.org/10.3329/dujs.v60i2.11536

Issue

Vol. 60 No. 2 (2012)

Section

Articles