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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

a)

 Hz

b)

 Hz

c)

 Hz

d)

 Hz



Question ID - 151212 | SaraNextGen Top Answer

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

a)

 Hz

b)

 Hz

c)

 Hz

d)

 Hz

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

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

i.e.,           v = 2.0 eV

or                v =  Hz

127 votes


127