ZnSe epitaxy layers were grown on (1 0 0)GaAs substrates by photo-assisted
MOCVD using DMZn and DMSe as group II and VI sources, respectively. Irradia
tion can improve the growth rate efficiently, but the irradiation intensity
influences the growth rate and the crystalline quality negligibly in a lar
ge range. Due to an oxidation reaction on the surface of ZnSe, the growth r
ate and the flow ratio of group II and VI sources influence the crystalline
quality. (C) 1999 Elsevier Science B.V. All rights reserved.