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Information Technology Journal
Year: 2007  |  Volume: 6  |  Issue: 7  |  Page No.: 1100 - 1103

Opto-Electrical Characteristics of Polycrystalline Photovoltaic Materials

S.F. Shaukat, R. Farooq, M.A.U. Khan, A. Rashid and Y. Dong    

Abstract: The optical and electrical properties of Copper-Indium-Selenium (CIS) thin films have been investigated using various experimental techniques. These compounds are extensively used in solar cell technology due to their exciting characteristics. CIS thin films have been grown onto glass substrates by a Stacked Element Layer (SEL) deposition technique in vacuum. Optical transmission measurements on different compositions of CIS films are observed and the absorption coefficient is determined. The Van der Pauw technique is used to divulge the electrical characteristics of these films. The electrical conductivity is found relatively high for the films annealed in vacuum but decreases for the films synthesised optimally. It is observed that p-type films have higher conductivity than n-type films. The reaction temperature of CIS formation is 250°C in vacuum. These properties are of great significance in manufacturing solar sell devices.

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