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KMID : 0896219830070010249
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Journal of Daegu Health College
1983 Volume.7 No. 1 p.249 ~ p.260
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The Research on the memory effect of Cds film Department of Radiotechnology
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Park Mang-Cho
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Abstract
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A new type of memory effect which has been found by the present author is investigated in detail in evaporated CdS films at low temperatures. If the light is turned off during the periodic photocurrent oscillation, the oscillation stops and the phase of the oscillation at the moment of turning off is retained; by turning on the light again, the oscillation begins at the retained phase. The memory remains unchanged in value or polarity. the memory disappears in a certain time under the condition that the specimen is illuminated under a bias voltage smaller than the threshold voltage; In this case the life time of the memory is inversely proportional to the light intensity. It is shown that the phase memory effect is due to the travelling high field domain which is caused by field quenching and is controlled by the light and or the bias voltage.
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KEYWORD
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