Synthesis, characterization, and optical properties of Mg‐doped zinc oxide single‐crystal microprisms

Abstract

Abstract Novel zinc oxide (ZnO) microprisms doped with Mg have been synthesized on Mg (NO 3 ) 2 ‐coated Si (111) substrates successfully by a thermal chemical vapor deposition method. The as‐prepared Mg‐doped zinc oxide single‐crystal microprisms were characterized with X‐ray diffraction (XRD), scanning electron microscopy (SEM), high‐resolution transmission electron microscopy (HRTEM), and photoluminescence (PL). The results show that the microstructures consist of hexagonal pyramids tips and hexagonal prisms. The whole structure is a perfect single crystal and has preferred growth along the [0001] direction. PL reveals ultraviolet (UV) emission at 388 nm and a strong green light emission peak at 500 nm. Mg‐doped microprisms will provide an improvement for novel electronic and optical devices. In addition, the growth mechanism of the special Mg‐doped ZnO microstructure is proposed based on a solid–vapor approach.