Experimental Confirmation of Relation between Pulse Drift Mobility and Charge Carrier Drift Mobility in Germanium

Abstract

Experimental data of drift mobilities of minority carriers in germanium are brought into agreement with theoretical predictions by distinguishing between group velocity and particle velocity of a pulse of minority carriers. Corrected high temperature measurements of electron drift mobility are consistent with the theoretical prediction $\mu =A{T}^{-\frac{3}{2}}$. The experimentally determined value of $A$ is $2.0\times {10}^7 {\mathrm{cm}}^2 {\mathrm{deg}}^{\frac{3}{2}}/\mathrm{v}\mathrm{o}\mathrm{l}\mathrm{t}-\mathrm{s}\mathrm{e}\mathrm{c}$.