Charge Screening of Polarization Fields in Nitride Nanostructures

Abstract

Spontaneous and piezoelectric polarization play a crucial role in nitride-based nanostructures and devices. The effects of polarization fields can, however, be reduced by free and fix charge screening. Optical transition energy, oscillator strength and recombination times are typical physical parameters that crucially depend on the degree of screening of polarization fields. In the following we will review the topic of polarization field screening and we will show how the screening can influence both static and dynamic properties.