Y-Line Emission and Lattice Relaxation in MBE-ZnSe and -ZnSSe on GaAs

Abstract
The Y-line emission in photoluminescence spectra at 11 K was studied in MBE-ZnSe and -ZnSSe (up to a sulfur content x=0.13) on GaAs. Compared with X-ray diffraction data, the Y-line seems to relate to misfit dislocations, and thus seems a good measure for checking lattice relaxation in ZnSe and ZnSSe epilayers with a sulfur content x0.05, the reasons for which are discussed.