Properties of ZnSxSe1−x–Zn1−yCdySe quantum well structures

Abstract

Molecular‐beam epitaxy has been employed to grown ZnS_xSe_1−x–Zn_1−yCd_ySe multilayers. Double heterostructures consisting of a multiple quantum well structure of ZnS_xSe_1−x–Zn_1−yCd_ySe sandwiched between ZnS_xSe_1−x have also been fabricated. Photopumped stimulated emission has been observed from these structures. In addition, double heterostructures with n‐type and p‐type ZnS_xSe_1−x cladding layers emit bright blue electroluminescence at 2.601 eV (476 nm) at room temperature.