Scattering of band carriers by neutral and charged impurities

TL;DR

This paper analyzes how neutral and charged impurities affect the mobility of band carriers in AIII-BV group crystals, providing a model for neutral impurities and exploring temperature dependence.

Contribution

It introduces a hydrogen-like model for neutral impurities and examines the impact of impurity ionization on carrier mobility in specific crystal groups.

Findings

Mobility depends on the ratio of ionized to neutral donors.

Temperature influences mobility through electron energy and impurity states.

The model applies to AIII-BV group crystals.

Abstract

Mobility of band carriers scattered on donors, partially ionized, partially neutral, is considered in general and calculated for crystals belonging to AIII-BV group. As neutral impurity we have constructed the hydrogen-like model. It is shown that dependence of mobility on temperature is determined by relation between number of ionized and neutral donors and by average energy of electrons.