Carrier Mobility (μ_n,p) is the measure of ease of charge carrier drift. That is, a measure of how quickly a charge carrier can move through a material. For example, how quickly an electron can travel through a semiconductor.

Overview

When an electric field is applied across a material, the electrons gain a net velocity in the direction of the field called the drift velocity, defined as

Where the carrier mobility [cm²/Vs] is defined as

Note that this is for both electrons () and holes ().