Effect of Alloy Scattering on Electron and Hole Impact Ionization Rates in Ga1-xInxAsyP1-y Alloy System

Abstract
The effect of alloy scattering on the electron and hole impact ionization rates, α and β in the Ga1-x In x As y P1-y alloy system lattice-matched to InP substrates is analyzed. A Monte Carlo simulation shows that the experimental α and β values in GaInAsP are very well explained by introducing alloy scattering, which greatly reduces α and β in the alloy system. This indicates that alloy scattering must be taken into account in estimating or deriving ionization rates in an alloy semiconductor.