Heat Treatment of CdSe Thin Films and Application to Photopotentiometers

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Abstract
Effects of heat treatment have been studied in a nitrogen atmosphere for improving the characteristics of poor photoconductive CdSe evaporated films. The following results were obtained. At first light resistance and dark resistance greatly decrease after the heat treatment of evaporated films in a pure nitrogen atmosphere for an hour. The ratio of dark resistance to light resistance under irradiation of 1,000/ux remained as low as an order of magnitude of 10. Secondary increase of an order of magnitude of 106 or 107 in dark resistance is obtained, adding to the post treatment in N2

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