Beaklike SnO2 nanorods with strong photoluminescent and field-emission properties

Jr H. He*, Te H. Wu, Cheng L. Hsin, Kun M. Li, Lih J. Chen, Yu L. Chueh, Li J. Chou, Zhong L. Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

304 Scopus citations

Abstract

Beaklike SnO2 nanorods were synthesized by a vapor-liquid-solid approach using Au as a catalyst. The nanorods grow along the [10I/direction and the beak is formed by switching the growth direction to [11̄2̄] through controlling the growth conditions at the end of the synthesis. The photoluminescence (PL) spectrum of the nanorods exhibits visible light emission with a peak at 602 nm. The field-emission (FE) properties of the nanorods have been measured to exhibit a turn-on field of 5.8 V μm 1. A comparative study of FE measurements between SnO2 nunorods with uniform diameters and these beaklike nanorods suggests that the shape and curved tips are important factors in determining the FE properties.

Original languageEnglish (US)
Pages (from-to)116-120
Number of pages5
JournalSmall
Volume2
Issue number1
DOIs
StatePublished - Jan 1 2006

Keywords

  • Electron microscopy
  • Field emission
  • Nanorods
  • Phototuminescence
  • Tin oxide

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)

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