Value of electron diffusion constant in GaAs for high electric field

Abstract
The value of the electron diffusion constant in GaAs for electric fields of nearly 50 and 150 kV/cm has been estimated by measuring microwave impedances of two double‐step doping profile (``high‐low'') GaAs IMPATT diodes. In the investigated cases, it is shown that the electron diffusion constant does not exceed 20 and 50 cm2/s for E =50 and 150 kV/cm, respectively.

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