When an electron goes fron the valence band to the conduction band in silicon,its energy
Channel: Doubtnut
Date: 12/07/2020

When an electron goes fron the valence band to the conduction band in silicon,its energy is increased by 1.1eV.the average energy exchange in a thermal collision is of the order of kT which is only 0.026eV at room tempareture.How is a thermal collision able to take some of the electrons from the valence band to the conduction band ?