Fabrication of ZnO crystals by UV-laser annealing on ZnO nanoparticles prepared by laser ablation method

T. Shimogaki, H. Kawahara, M. Higashihata, Hiroshi Ikenoue, Daisuke Nakamura, Y. Nakata, T. Okada

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

3 Citations (Scopus)

Abstract

Various zinc oxide (ZnO) nanocrystals are expected as new building blocks for optoelectronic devices. Among them, we have studied about fabricating ZnO nanowires using nanoparticle-assisted pulsed laser deposition (NAPLD). Recently, we achieved to fabricate the periodically-aligned ZnO nanowires with a period of from 4 to 5 μm using interfering four-beams of nanosecond ultraviolet (UV) laser processing. ZnO nanowires with diameters of several dozen nanometers were grown on the ZnO buffer layer prepared by pulsed laser deposition at the low-chamber pressure of 3 Pa. Additionally, crystallization of ZnO nanoparticles collected on a sapphire substrate was achieved by UV-laser annealing. In this method, ZnO nanoparticles were collected at room temperature, then they were laser-annealed with a KrF excimer laser. The particle size increased by instantaneous melting and aggregation of ZnO nanoparticles because of the high absorption efficiency of ZnO in the UV spectral region. It was found that the optical property was improved by UV-laser annealing process. Additionally, their x-ray diffraction peaks of wurtzite ZnO crystals had narrower full width half maximum than those before laser annealing.

Original languageEnglish
Title of host publicationOxide-Based Materials and Devices VI
EditorsFerechteh H. Teherani, David C. Look, David J. Rogers
PublisherSPIE
ISBN (Electronic)9781628414547
DOIs
Publication statusPublished - Jan 1 2015
EventOxide-Based Materials and Devices VI - San Francisco, United States
Duration: Feb 8 2015Feb 11 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9364
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherOxide-Based Materials and Devices VI
CountryUnited States
CitySan Francisco
Period2/8/152/11/15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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    Shimogaki, T., Kawahara, H., Higashihata, M., Ikenoue, H., Nakamura, D., Nakata, Y., & Okada, T. (2015). Fabrication of ZnO crystals by UV-laser annealing on ZnO nanoparticles prepared by laser ablation method. In F. H. Teherani, D. C. Look, & D. J. Rogers (Eds.), Oxide-Based Materials and Devices VI [93640C] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9364). SPIE. https://doi.org/10.1117/12.2078849