Low-Temperature Growth of ZnSe by Photoassisted Molecular Beam Epitaxy

Abstract
ZnSe epilayers have been successfully grown at a low temperature of 150°C for the first time by photoassisted molecular beam epitaxy. A He-Cd laser (441.6 nm) with an intensity of about 300 mW/cm2 was used as a light source. The free-exciton line in photoluminescence spectra at 11 K was sharp and strong, comparable with that of unirradiated epilayers grown at 340°C which is the optimum growth temperature without irradiation.