Room-temperature exciton absorption in (Zn,Cd)Se/ZnSe quantum wells at blue-green wavelengths

Abstract

Excitonic absorption has been investigated in multiple quantum wells of (Zn,Cd)Se/ZnSe in an effort to increase the electron-hole Coulomb interaction. Well-defined absorption peaks for the n=1 heavy hole exciton are observed at room temperature showing evidence for a reduced exciton-optical phonon scattering rate.