Growth characteristics of ZnO nanowires on silicon, sapphire and GaN substrates

Abstract

ZnO nanowires have been grown on [001] silicon, c-sapphire and micro-patterned (0001) GaN substrates, which are characterized by scanning electron microscopy, X-ray diffraction, and photoluminescence. It is shown that the crystallinity of the nanowires sensitively depends on the types of the substrates. The ZnO nanowires have good optical and structural properties.