Catalyst-free synthesis of vertically-aligned ZnO nanowires by nanoparticle-assisted pulsed laser deposition

R. Q. Guo, J. Nishimura, M. Matsumoto, D. Nakamura, T. Okada

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Vertically aligned ZnO nanowires have been successfully synthesized on c-cut sapphire substrates by a catalyst-free nanoparticle-assisted pulsed-laser ablation deposition (NAPLD) in Ar and N2 background gases. In NAPLD, the nanoparticles formed in the background gas by laser ablation are used for the growth of the nanowires. The surface density of the nanowires can be controlled by varying the density of nanoparticles, which is in turn achieved by varying ablation laser parameters such as the energy and the repetition rate. When single ZnO nanowire synthesized in a N2 background gas was excited by 355 nm laser-pulse with a pulse-width of 8 ns, stimulated emission was clearly observed, indicating high quality of the nanowire.

Original languageEnglish
Article number843
Pages (from-to)843-847
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Volume93
Issue number4
DOIs
Publication statusPublished - Dec 2008

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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