In a photodiode, on which property the dark current depends?
Q.2 (iv) In a photodiode, on which property the dark current depends?
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Answer: On the temperature (of the junction).
Dark current is the small reverse current that flows through a reverse-biased photodiode when no light falls on it. It is carried by thermally generated minority carriers, so it depends on temperature and increases as the temperature rises (it does not depend on light intensity). It also rises slightly with the reverse bias voltage.
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· 28 Oct 2026
AI-verified · Oct 2026
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