Activation Energies and Mobilities

Many workers [152] have assumed a crude Arrhenius relationship of the conductivity to temperature (Eq. (6.8)), more correctly applicable near ambient temperature to crystalline semiconductors, to arrive at an estimation of the activation energy of conduction . In such cases, typically, conductivity (a) is proportional to n, the number density of charge carriers, which in turn has the following relation  

There is a rather straightforward though simplistic relationship between macroscopic (bulk) conductivity (a) and mobility of charge carriers (p), viz. 

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