Well-aligned ZnO nanorods via hydrogen treatment of ZnO films

Jih Jen Wu, Hui I. Wen, Chan Hao Tseng, Sai Chang Liu

研究成果: Article同行評審

87 引文 斯高帕斯(Scopus)

摘要

The formation of well-aligned ZnO nanorods has been achieved via H 2 treatment of as-grown ZnO films. Structural analyses reveal that the ZnO nanorods on the ZnO films are preferentially oriented along the c-axis direction and exhibit a single-crystalline wurtzite structure. To investigate the mechanism of formation of ZnO nanorods on the film, further H2 treatment of the as-grown ZnO nanorods was performed. Thinner and longer ZnO nanorods were obtained after certain periods of H2 treatment. It is proposed that both etching and re-deposition processes are taking place during the process, resulting in the aspect-ratio enhancement of the ZnO nanorods and the formation of ZnO nanorods on the ZnO films. It is suggested that an appropriate concentration of the etching products remaining from the initial rod-forming H2 treatment allows subsequent re-deposition of the ZnO nanorods with enhanced differentiation of the growth rates on the 〈001〉 and 〈100〉 crystal facets.

原文English
頁(從 - 到)806-810
頁數5
期刊Advanced Functional Materials
14
發行號8
DOIs
出版狀態Published - 2004 八月 1

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 材料科學(全部)
  • 凝聚態物理學

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