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Mobility

The mobility is a quantity related to the drift velocity of electrons or holes in an applied electric field across a material. The mobility depends on different scattering processes that can decelerate the free carriers, like collisions with the lattice or scattering at crystal defects and impurities.

Mobility

The mobility is a quantity related to the drift velocity of electrons or holes in an applied electric field across a material. The mobility depends on different scattering processes that can decelerate the free carriers, like collisions with the lattice or scattering at crystal defects and impurities.

Hence the mobility depends on the doping and defect density as well as the injection level. In our simulations and measurements we usually apply the model of DORKEL and LETURQUE[1].

[1] J. M. Dorkel and P. Leturcq, Solid-State Electronics 24, 821-825 (1981)

  • Fig. 1: mobility for electrons and holes versus injection for different doping concentrations

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