Hot-carrier-induced photon emission in submicron GaAs devices

Abstract
Impact ionization phenomena accompanied by light emission in the 1.1-3.1 eV energy range take place in GaAs MESFETs and in AlGaAs/GaAs HEMTs at high drain voltages. The dominant mechanism for the emission of photons with hv>Eg is the recombination between impact ionization generated holes and channel electrons.