Defect-Capture Dynamics and Effect on Electron Transport*

Using a quantum-statistical theory, we study defect dynamics, including capture and relaxation rates as functions of temperature and doping density. By utilizing these results, defect energy-relaxation, capture and escape rates are numerically evaluated. Meanwhile, we also calculate the energy- and momentum-relaxation rates as well as the current suppression factor. By combining these results, the temperature dependence for longitudinal & Hall mobility in single- and multi-quantum wells is obtained. Additionally, we compute the defect correction to polarization and dielectric functions, and apply them to acquire the first two moment equations from a general Boltzmann transport theory. Furthermore, the inverse momentum-relaxation time and mobility tensor are derived analytically with the help of defect-corrected polarization function.