A p-n photodiode is made of a material w...

A p-n photodiode is made of a material with a band gap of `2.0 eV`. The minimum frequency of the radiation that can be absorbed by the material is nearly

`10xx10^(14)Hz`

`5xx10^(14)Hz`

`1xx10^(14)Hz`

`20xx10^(14)Hz`

Text Solution

Verified by Experts

The correct Answer is:

p-n photodiode is a semiconductor diode that produces a significant current when illuminated. It is reversed biased but is operated below the breakdown voltage.
Energy of radiation `=` band gap energy
ie., `hv=2.0eV`
or `v=(2.0xx1.6xx10^(-19))/(6.6xx10^(-34))approx5xx10^(14)Hz`

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