Formula Energy Band Gap of Germanium (Temperature Dependence)

Energy gap

Unit
Energy gap of germanium (Ge), that is, the energy gap between the valence band maximum and conduction band minimum..
Temperature $$T$$Energy gap $$W_{\text g}$$
0 K0.742 eV
300 K0.625 eV
1000 K0.352 eV
Energy band gap of germanium for three different temperatures.

This formula for the temperature dependence of the band gap is an experimental fit.

Temperature

Unit
Temperature of the germanium material in Kelvin. The band gap decreases linearly with temperature.