The energy of a photon of sodium light `(lambda=589 nm)`equal the band gap of a semiconducting
Channel: Doubtnut
Date: 2020-07-05

The energy of a photon of sodium light `(lambda=589 nm)`equal the band gap of a semiconducting material.(a)Find the minimum energy E requried to create a hole-electron pair.(b)Find the value of `E//kT`at a temperature of 300K.