Applied Physics A

, Volume 95, Issue 2, pp 381–385

Multi-photon induced ultraviolet emission from hexagram-shaped ZnO nanorods

Authors

  • G. P. Zhu
    • Advanced Photonics Center, School of Electronic Science and EngineeringSoutheast University
    • Department of PhysicsHuaibei Coal Industry Teachers College
  • J. Zhu
    • Advanced Photonics Center, School of Electronic Science and EngineeringSoutheast University
    • Advanced Photonics Center, School of Electronic Science and EngineeringSoutheast University
  • X. Li
    • Advanced Photonics Center, School of Electronic Science and EngineeringSoutheast University
  • J. P. Liu
    • Advanced Photonics Center, School of Electronic Science and EngineeringSoutheast University
  • Y. P. Cui
    • Advanced Photonics Center, School of Electronic Science and EngineeringSoutheast University
Article

DOI: 10.1007/s00339-009-5094-5

Cite this article as:
Zhu, G.P., Zhu, J., Xu, C.X. et al. Appl. Phys. A (2009) 95: 381. doi:10.1007/s00339-009-5094-5

Abstract

Zinc oxide (ZnO) nanorods with hexagram cross-section were prepared by vapor-phase transport method. The growth mechanism of the nanorods was discussed by considering diffusion effects of reactant gasses at high supersaturation. A strong ultraviolet peak at 391 nm and a weak visible band depending on the excitation wavelength were observed under the excitation by infrared femtosecond laser. The UV and the visible emission were respectively attributed to four-photon induced photoluminescence (FPPL) and third harmonic generation (THG). The characteristics and the generation mechanism of the FPPL were discussed.

PACS

73.61.Ga73.63.Bd74.25.Gz42.65.-k81.10.Bk

Copyright information

© Springer-Verlag 2009