Carrier Mobility Calculator

Calculate charge carrier mobility in semiconductors and conductors

Calculation Method:

Conductivity σ (S/m):

Carrier Concentration (m⁻³):

Temperature (K):

About Carrier Mobility

Carrier mobility characterizes how quickly charge carriers move through a material under an applied electric field. Higher mobility means better electrical conductivity for a given carrier concentration.

Key Formulas:

μ = σ/(ne) (from conductivity)
μ = vd/E (from drift velocity)
μ = eτ/m* (from scattering time)
D = μkT/e (Einstein relation)

Typical Values (300K):

Si electrons: 1400 cm²/V·s
Si holes: 450 cm²/V·s
GaAs electrons: 8500 cm²/V·s
Graphene: 200,000 cm²/V·s