Date:Oct 21, 2019

Photodiode also known as photodiode. Its shell is equipped with a glass window,

In order to receive light. It is characterized by the fact that when light shines on its PN junction, free electrons and holes can be generated in pairs, increasing the concentration of a few carriers in the semiconductor and increasing the reverse current under a certain reverse bias voltage. Therefore, its reverse current increases linearly with the increase of light intensity.

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