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Comparison between the structural, morphological and optical properties of CdS layers prepared by Close Space Sublimation and RF magnetron sputtering for CdTe solar cells

Comparison between the structural, morphological and optical properties of CdS layers prepared by Close Space Sublimation and RF magnetron sputtering

Comparison between the structural, morphological and optical properties of CdS layers prepared by Close Space Sublimation and RF magnetron sputtering for CdTe solar cells  
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CdS layers deposited by radio frequency (RF) magnetron sputtering at different substrate temperatures and Close Space Sublimation (CSS) on SnO2:F films have been investigated. Both types of films were prepared in the integrated ultra high-vacuum system known as DAISY-SOL and characterised with respect to crystal structure, texture, morphology, stoichiometry and optical properties. For this purpose, X-ray photoelectron spectroscopy, scanning electron microscopy, atomic force microscopy, X-ray diffraction and optical transmittance measurements were used in this work. The results show that RF sputtering produces dense and pin-hole free CdS layers with a more pronounced crystallographic texture, a cadmium excess and a higher optical absorption than those prepared by CSS.
Journal: Thin Solid Films , vol. 519, no. 21, pp. 7596-7599, 2011
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