Morphological and opto-structural features

of the buffer film CdS designed for immediate applications

upon the second-generation solar cells

 

D. Soubane1, 5*, A. Soubane2, H. Soubane3, S. Laasri4, G. Nouet5, A. Ihlal6

1 UFR physique, Université Louis Pasteur 4, Rue blaise pascal-67000 Strasbourg, France

2 UFR Informatique, Université Claude Bernard 43, Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France.

3 UFR Informatique Mathématiques, Faculté des Sciences 4, Avenue Ibn Battouta B.P. 1014 RP, Rabat, Morocco

4 Laboratoire de Thermodynamique et Énergétique B.P. 8106, Hay dakhla, Agadir, Morocco.

5 Centre de Recherche sur les Ions, les Matériaux et la Photonique (CIMAP), Bd Maréchal Juin, 14050 Caen, France

6 Laboratoire Matériaux et Énergies Renouvelables, Département de Physique, Faculté des Sciences

B.P. 8106, Hay dakhla, Agadir, Morocco

* Corresponding author. E-mail: driss.soubane@ensiaen.fr  / driss.Soubane@ulp.u-strasbg.fr

Received: 26 June 2008; revised version accepted: 31 July 2008

 

Abstract

     Cadmium Sulphide (CdS) thin films of 1 micrometer thickness were prepared by Modified Chemical Bath Deposition (MCBD) technique. The effect of deposition temperature and heat treatments were investigated by means of X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) and optical measurements. High quality films were obtained with a well reproducibility. The obtained films were highly transmitting in the infrared region. In the visible region, absorption coefficient of about 104 to 105 cm-1 was measured. The band gap value was found to be decreased further to the heat treatment in Vacuum at 400°C for one hour.

 

Keywords: Cadmium Sulphide; Thin film; MCBD; Photovoltaic

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