Crystallographic Parameter and Optical Absorption Measurement of CuInSe₂ Thin Films for Solar Cells

Abstract:

Thin films CuInSe₂ (CIS) cells have been fabricated by the electro chemical method. Some of the physical properties such as lattice parameter, crystal structure and grain size of CuInSe₂ (CIS) films with different Cu/In ratios ( 0.50-1.1) were determined using X-ray diffractornetry. The surface morphology with different Cu/In ratios was studied using a scanning electron microscope. The SEM studies on these films showed that the grain size increases the Cu/In ratios increases from 0.49 to 1.1. The variation of the band gap with different Cu/In ratio was determined from optical absorption measurements. The results showed that the band gap decreases as the Cu/In ratio increases over the considered range of composition. Key words: Thin films, Lattice Parameter , Optical Absorption, grain size

• Periodical: Advanced Materials Research (Volume 895)
• Pages: 35-40
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.895.35
• Online since: February 2014
• Authors: A.A.I. Al-Bassam*, U.A. Elani
• Keywords: Grain Size, Lattice Parameter, Optical Absorption, Thin Film

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