Applied Physics A

, Volume 100, Issue 2, pp 493–499 | Cite as

Vapor–liquid–solid growth and narrow-band ultraviolet photoluminescence of well-aligned GeO2 nanowire arrays with controllable aspect ratios

  • Jie Yu
  • Heqing Yang
  • Ruyu Shi
  • Lihui Zhang
  • Hua Zhao
  • Xuewen Wang
Article
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Accepted:

Abstract

GeO2 nanowire arrays have been fabricated by thermal evaporation of Ge powder in air via a vapor–liquid–solid mechanism with Au as a catalyst. The GeO2 nanowires are single crystalline with a hexagonal structure and have a controllable aspect ratio in the range of 23–167. The controllable synthesis of GeO2 nanowire arrays with different aspect ratios was achieved by adjusting the heating temperature and time. Photoluminescence spectra of the GeO2 nanowire arrays were measured at room temperature, and two ultraviolet emission peaks at 347 and 364 nm are observed for the first time, which indicates that the GeO2 nanowire arrays may have potential applications in nanoscale photonic and electronic devices. Moreover, this vapor–liquid–solid growth process may be employed for synthesis of the highly oriented nanowire arrays of other oxides, and provides opportunities for both fundamental research and technological applications.

Keywords

Nanowire Array Nanowire Growth Blue Light Emission Trap Exciton Ultraviolet Emission Peak 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Jie Yu
    • 1
  • Heqing Yang
    • 1
  • Ruyu Shi
    • 1
  • Lihui Zhang
    • 1
  • Hua Zhao
    • 1
  • Xuewen Wang
    • 1
  1. 1.Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Materials ScienceShaanxi Normal UniversityXi’anChina

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