中國(guó)有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 21 No. 9 September 2011 |
（Key Laboratory of Advanced Technologies of Materials of Ministry of Education,
School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China）
Abstract:The zinc oxide whiskers were synthesized by the equilibrium gas expanding method at the temperature of 700 °C with metallic zinc as the main raw material without any catalysts. The effects of the growth time on microstructure and photoluminescence properties were investigated. The results show that the as-grown samples are composed of uniform tetrapod-like ZnO whiskers. The length and diameter of the arms of the tetrapod-like ZnO whiskers increase obviously with the increase of the growth time. The strong single ultraviolet (UV) emission centering 385−391 nm without any accompanying deep-level emission is observed in the room temperature photoluminescence (PL) spectra of the whiskers. The intensity of UV emission increases markedly with the increase of growth time.
Key words: ZnO; whisker; oxidation; crystal growth
