Aligned growth of ZnO nanowires by laser ablation and their applications

Tatsuo Okada, Ruiqian Guo, Jun Nishimura, Masato Matsumoto, M. Higashihata, D. Nakamura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 as a starting material for the growth of the nanowires. The surface density of the nanowires can be controlled by varying the density of nanoparticles, which are accomplished by changing the energy of the ablation laser, the repetition rate of the laser and so on. 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. These nanowires were used as building blocks for an ultraviolet photo-sensor, field emitters and an ultraviolet light emitting diode with a structure of n-ZnO/ZnO nanowire/p-GaN.

Original languageEnglish
Title of host publication3rd Pacific International Conference on Applications of Lasers and Optics, PICALO 2008 - Conference Proceedings
PublisherLaser Institute of America
Pages825-829
Number of pages5
ISBN (Print)9780912035895
DOIs
Publication statusPublished - Jan 1 2008
Event3rd Pacific International Conference on Applications of Lasers and Optics, PICALO 2008 - Beijing, China
Duration: Apr 16 2008Apr 18 2008

Publication series

Name3rd Pacific International Conference on Applications of Lasers and Optics, PICALO 2008 - Conference Proceedings

Other

Other3rd Pacific International Conference on Applications of Lasers and Optics, PICALO 2008
CountryChina
CityBeijing
Period4/16/084/18/08

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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  • Cite this

    Okada, T., Guo, R., Nishimura, J., Matsumoto, M., Higashihata, M., & Nakamura, D. (2008). Aligned growth of ZnO nanowires by laser ablation and their applications. In 3rd Pacific International Conference on Applications of Lasers and Optics, PICALO 2008 - Conference Proceedings (pp. 825-829). (3rd Pacific International Conference on Applications of Lasers and Optics, PICALO 2008 - Conference Proceedings). Laser Institute of America. https://doi.org/10.2351/1.5057134