Abstract

A Monte Carlo simulation of high field electron transport in ZnS, ZnSe and ZnTe has been presented. The model includes a nonparabolic three valley of the conduction band. The simulation includes scattering mechanisms associated with acoustic, intervalley and polar optical phonons, as well as ionized impurity scattering and impact ionization. The inclusion of the second conduction band is found to have a significant impact on the energy distribution at fields above 100 kV/cm. The second conduction band is also important because of its effect on the impact ionization rate. The results of simulation which are drift velocity and average electron energy are presented and discussed.

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