Abstract
It is shown how the total electric current in a semiconductor is modified due to heating of the carrier systems by a dc electric field. The change of the carrier concentration in the conduction and valence bands due to heating plays an important role in the transport of the electron and hole systems. The dependence of the capture factor on hot electron temperature leads to extra nonlinearity of the kinetic coefficient in the current–voltage characteristic curve even when the electron mobility is independent of the electron temperature. This additional nonlinear term in current density has never been considered in standard classical theory of hot electron transport. This extra nonlinear term is of the same order as those of the nonequilibrium energy of carrier contribution.
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