Thin film CdTe solar cells with an absorber layer thickness in micro- and sub-micrometer scale
Authors:
- 3 October 2011
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 99 (14) , 143502
Abstract
CdTe thin film solar cell with an absorber layer as thin as 0.5 μm was fabricated. An efficiency of 7.9% was obtained for a 1-μm-thick CdTe solar cell. An increased intensity of deep recombination states in the band gap, which was responsible for the reduced open-circuit voltage and fill factor for ultra-thin solar cells, was induced due to the not-well-developed polycrystalline CdTe microstructure and the CdS/CdTe heterojunction and the presence of Cu in the back contact. The experimental results presented in this study demonstrated that 1-μm-thick absorber layer is thick enough to fabricate CdTe solar cell with a decent efficiency.Keywords
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