Growth and optical properties of a- and c-axis oriented Zn-ZnO nanocables fabricated via a facile one-step process

Yen Chih Chen, Chia Hao Tu, Yi Feng Lai, Kuang Yuan Hsu, Chuan Pu Liu

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

This study reports the growth of Zn-ZnO nanocables grown along the [1120] (a-plane) and [0 0 0 1] (c-plane) directions. The a-plane-oriented nanocables were synthesized via one-step thermal evaporation and condensation, whereas the highly ordered c-plane-oriented nanocables were synthesized via a vapor-solid-solid growth method with Sn catalysts. Photoluminescence (PL) measurements show that the near-band-edge emissions of both types of Zn-ZnO nanocables are blue-shifted compared to those of ZnO nanotubes without Zn cores, which is caused by compressive stress. Temperature-dependent PL spectra reveal that there are two dominant emissions for each type of nanocables at low temperatures. The emission attributed to excitons bound to neutral donors is common to both types of nanocables and persistent at room temperature. The other emission involves different excitonic transitions, which are related to different surface planes.

原文English
頁(從 - 到)115-121
頁數7
期刊Journal of Alloys and Compounds
554
DOIs
出版狀態Published - 2013 3月 25

All Science Journal Classification (ASJC) codes

  • 材料力學
  • 機械工業
  • 金屬和合金
  • 材料化學

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