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Consequence of Post-Annealing on Optical, Structural and Electrical Properties of Cadmium Telluride Thin Films for Solar Cells Applications |
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PP: 21-26 |
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doi:10.18576/ijtfst/140104
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Author(s) |
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Hemant Kumar,
Mangej Singh,
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Abstract |
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| In this paper, the thermally evaporated thin films of Cadmium Telluride (CdTe) have been deposited onto a highly cleaned glass substrate at pressure ~10-5 mbar. The thicknesses of CdTe thin films have been taken 1μm. After that, these thin films were placed in quartz glass tubes and annealed under a 500W halogen lamp for different times: 1 minute, 2 minutes, 3 minutes, and 4 minutes. The optical, structural and electrical properties have been carried out using UV-Vis- NIR, SEM, thermal electrical power (TEP) measurements, I-V and XRD measurements. In this study, it is shown that the optical and structural properties of CdTe thin films increase with increasing annealing time, while the electrical properties indicate the p-nature of CdTe thin films, suggesting that they can be used in solar cells as p-type absorber layers. Additionally, all essential conditions or requirements for improving the performance of solar cells were observed and mentioned.
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