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HETEROSTRUCTURE INTERDIGITAL HIGH SPEED PHOTOCONDUCTIVE DETECTOR
HETEROSTRUCTURE INTERDIGITAL HIGH SPEED PHOTOCONDUCTIVE DETECTOR
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机译:异质结数字高速光电检测器
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摘要
A high speed photoconductive detector is disclosed which comprises two interdigital electrically conducting electrodes formed on a photoconductive layer. The device speed and sensitivity are improved by using a double-heterostructure configuration comprising an active layer formed on an isolation layer in turn formed on a supporting substrate. A passivation layer is formed on the active layer. This configuration confines the generated carriers to the active layer. Consequently, current will be induced under optical illumination due to photo-carrier generation. This interdigitated geometry allows for a large device cross-section and small carrier transit distance.
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