Question

Indicate the direction in which the electrons in the valence and conduction band will move in the dispersion relation when an electric field is applied in the [100] direction. The figure below shows the dispersion relation of silicon in the [111] and [100] directions. It also shows the location of the thermally excited electrons (black dots) and holes (circles) at room temperature.

4 Conduction band Si 3 Valence band 0 [100] P Crystal momentum hk

Answer 1

energy じInCrea Energy of hele ic For e unc たPE _→ ha