Resonant Raman scattering in ZnTe-ZnSe strained layer superlattices

Abstract
Resonant Raman scattering and photoluminescence spectra have been measured in ZnTe-ZnSe superlattice. Strong out-going and in-coming resonant enhancements have been observed for multilongitudinal optic phonon bands of the ZnTe-like mode close to the photoluminescence band, which is assigned to direct recombination of excitons. The calculated exciton energies taking into account the effects of quantum well and strain field agree well with photoluminescence energies in superlattices with different thicknesses of the ZnTe layer.