Eur. Phys. J. Appl. Phys. (2013) 64: 30304
https://doi.org/10.1051/epjap/2013130302

Effect of deposition time on the Cd_0.8Zn_0.2S thin films

Department of Physics, Shahid Beheshti University, Tehran, Iran

^a e-mail: somayeh tohidi@yahoo.com

Received: 26 June 2013
Revised: 10 September 2013
Accepted: 12 November 2013
Published online: 9 December 2013

Abstract

Nanocrystalline Cd_0.8Zn_0.2S thin films were prepared by chemical-bath-deposited method and the effect of time on the properties of Cd_0.8Zn_0.2S 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 Cd_0.8Zn_0.2S films were determined and the analysis of the result showed that Cd_0.8Zn_0.2S thin films have direct transition and the values of energy gap indicates quantum confinement effect.