See also: [[Mobility-Lifetime Product]] # Electron Mobility ($\mu$) In solid-state physics, the electron mobility characterizes how quickly an electron can travel through a metal or semiconductor. There is an analogous measure for holes as well. This term has units of $cm^2/ (V-s)$ Note: the term "carrier mobility" refers to BOTH electrons and holes, and not just one specific particle. The [[Drift Velocity]] of an electron is calculated by the product of the electron mobility and the applied electric field: $v_d = \mu_e E$.