Indium antimonide has a band gap of 0.23eV between the valence and the conduction band.Find the temperature at which kT equal the band gap.

Explanation

Given `E = 0.23eV,`
`K = 1.38xx10^(-23)`
`KT = E`
`rArr 1.38xx10^(-23)xxT = 0.23xx1.6xx10^(-19)`
`T = (0.23xx1.6xx10^(-19))/(1.38xx10^(-23))`
` = (0.23xx1.6xx10^4)/(1.38)`
`0.2676xx10^4`
`0.267xx10^4 = 2670`