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Vol. 72, Issue 10, October 2006, pp. 786-792

 

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Structural and Optical Properties of Chemical Bath Deposited CuIn(S,Se)2  Thin Films

 

R. H. Bari, L. A. Patil

Materials Research Lab, P.G. Dept. of Physics, Pratap College,
Amalner 425 401, India
*Corresponding author: E-mail: rameshbari24@yahoo.com

 

Received: 26 September 2006 /Accepted: 18 October 2006 /Published: 23 October 2006

 

 

Abstract: Thin films of CuIn(S, Se)2 have been prepared by chemical bath deposition technique at 60o C on glass substrate. The deposition parameters such as pH, temperature and time have been optimized. All films were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X-ray analysis (EDAX), and Absorption spectroscopy. The morphology of the CuIn(S, Se)2 was found to be nonstoichiometric. The set of films having different elemental compositions was prepared by varying Cu/In ratio from 1.86 to 12.15 (at %). The films with band gap energies varying from 1.15 eV to 1.54 eV were synthesized by varying composition.

 

Keywords: Thin films, CuIn(S,Se)2; Deposition parameter; Composition; Grain size; Band gap energy

 

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