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Effect of deposition time on the Cd0.8Zn0.2S thin films

Published online by Cambridge University Press:  09 December 2013

Somayeh Tohidi  and
Mahdi Ghasemifard
Somayeh Tohidi*
Affiliation:
Department of Physics, Shahid Beheshti University, Tehran, Iran
Mahdi Ghasemifard
Affiliation:
Department of Physics, Shahid Beheshti University, Tehran, Iran
*
ae-mail: somayeh [email protected]
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Abstract

Nanocrystalline Cd0.8Zn0.2S thin films were prepared by chemical-bath-deposited method and the effect of time on the properties of Cd0.8Zn0.2S thin films was studied. The X-ray diffraction (XRD) patterns show that the synthesized films have a cubical (zinc blende) phase. The mean crystallite size and the internal lattice strain were calculated. Atomic force microscopy (AFM) studies showed that the surface roughness of the films increase with increasing thickness. The optical constants of Cd0.8Zn0.2S films were determined and the analysis of the result showed that Cd0.8Zn0.2S thin films have direct transition and the values of energy gap indicates quantum confinement effect.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 64 , Issue 3 , December 2013 , 30304
Copyright
© EDP Sciences, 2013

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