Abstract
The fabrication and properties of CdTe layer are most important to the performance of CdTe thin film solar cells, among their several function layers. In the paper, a technology of closed-space sublimation(CSS) in Ar+O2 atmosphere has been studied and a method of depositing CdTe thin films on smooth glass substrata has been developed. The structural properties of these films deposited in an appropriate CSS process have been investigated by XRD and SEM, which show that there are some changes by different abrading times. Then, the optical and electrical properties of CdTe films deposited on glass in different fractional pressure of O2 have been studied, and the effects of post-treatment on the properties are observed. These results have been used to prepared CdS/CdTe/ZnTe:Cu solar cells. FF of 70.3% and efficiency of 13.38% have been demonstrated for 0.501cm2 Cell.
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