Synthesis, morphology and random laser action of ZnO nanostructures

L. Miao, S. Tanemura, Y. Ieda, M. Tanemura, Y. Hayashi, H. Y. Yang, S. P. Lau, B. K. Tay, Y. G. Cao

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Three-dimensional (3-D) ZnO random-wall nanostructures and one-dimensional (1-D) ZnO nanorods were prepared on silicon substrates by a simple solid-vapour phase thermal sublimation technique. Optical pumped random lasing has been observed in the ZnO random-wall arrays with a threshold intensity of 0.38 MW/cm2 in the emission wavelength from 380 to 395 nm. The optical gain was attributed to the closed-loop scattering and light amplification of the ZnO random-wall. The experimental result suggests that the morphology of nanostructure is the key factor to effect random lasing.

Original languageEnglish
Pages (from-to)2660-2663
Number of pages4
JournalSurface Science
Volume601
Issue number13
DOIs
Publication statusPublished - 2007 Jul 1

Keywords

  • M.1. Zinc oxide
  • M.2. Nanostructure
  • M.3. Semiconducting surfaces
  • Random lasing
  • S.3. Evaporation and sublimation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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