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What is a photoemissive cell?

by aman in Science at 2017-04-17 16:32:48 got 1 Comments 12 Views
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aman comment on "What is a photoemissive cell?"

It consists of two electrodes a cathode and an anode enclosed in a highly evacuated glass or quartz bulb. the cathode is a semi cylindrical plate coated with a photosensitive material such as a layer of cesium deposited on Silver oxide. sometimes a thin layer of photosensitive material is coated on the inner wall of the bulb.