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PREPARATION OF THERMALLY EVAPORATED CdTe THIN FILMS |
| Shahzad Naseem;Naseer-ud-Din;Khadim Hussain |
| Centre for Solid State Physics, University of the Punjab,
Quaid-E-Azam Campus, Lahore, Pakistan
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| Cite this article: |
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Shahzad Naseem, Naseer-ud-Din, Khadim Hussain 1990 Chin. Phys. Lett. 7 510-513 |
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Abstract Thin films of cadmium telluride were prepared by evaporating cadmium telluride powder in a vacuum of less than 10-4 Torr. The substrate temperature was varied systematically from room temperature to 300°C. The results of optical and structural characterizations have revealed that the films posses a high value of absorption coefficient with a bandgap value in the range 1.475-1.769eV, and that the films are of cubic structure with a preferred orientation along (111) plane. Four probe measurements have shown that resistivity of these films is affected by the change in substrate temperature, with the lowest value (12.6Ω-cm) being at 200°C.
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| Keywords:
68.55.-a
73.60.Cs
78.65.-s
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Published: 01 November 1990
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