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Authors

K A Adam

Abstract

Polycrystalline PbxS1.x photoconductive detectors with both value of x(0.50&0.53) were fabricated using vacuum evaporation technique at room temperature and under vacuum 10 mbar. The thickness of films was 2.0 µm. The structure of the films has been examined by x-ray diffraction The detection properties': [responsivity (Ra), quantum efficiency(n), signal-to-noise ratio (S/N) ,detectivity (D') and noise equivalent power (NEP)] have been measured for both value of x .It was found that the responsivity, n, Dand S/N have increased while NEP decreased when the value of 0.53.

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