Fabrication and bandgap engineering of doped ZnO microspheres by simple laser ablation in air

Daisuke Nakamura, Tetsuya Shimogaki, Toshinobu Tanaka, Fumiaki Nagasaki, Yuki Fujiwara, Mitsuhiro Higashihata, Hiroshi Ikenoue, Tatsuo Okada

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

2 Citations (Scopus)

Abstract

We synthesized magnesium (Mg)-doped ZnO microspheres by laser ablation of a ZnO sintered target containing magnesium oxide (MgO) with the fundamental of a Nd:YAG laser at 1064 nm. The well-spherical ZnO microcrystals with diameters of 1-20 μm were collected on a substrate which was put near the ablation spot. X-ray diffraction and micro-Raman spectrum indicate that the ZnO microspheres have a crystalline structure. Room-temperature photoluminescence properties of the microsphere were investigated under third harmonic generation of a Nd:YAG laser excitation at 355 nm. An ultraviolet (UV) lasing in whispering gallery mode (WGM) and blue-shift of the UV WGM peaks were observed from the Mg-doped ZnO microsphere.

Original languageEnglish
Title of host publicationLaser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXI
EditorsBeat Neuenschwander, Stephan Roth, Costas P. Grigoropoulos, Tetsuya Makimura
PublisherSPIE
ISBN (Electronic)9781628419702
DOIs
Publication statusPublished - Jan 1 2016
EventLaser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXI - San Francisco, United States
Duration: Feb 15 2016Feb 18 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9735
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherLaser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXI
CountryUnited States
CitySan Francisco
Period2/15/162/18/16

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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  • Cite this

    Nakamura, D., Shimogaki, T., Tanaka, T., Nagasaki, F., Fujiwara, Y., Higashihata, M., Ikenoue, H., & Okada, T. (2016). Fabrication and bandgap engineering of doped ZnO microspheres by simple laser ablation in air. In B. Neuenschwander, S. Roth, C. P. Grigoropoulos, & T. Makimura (Eds.), Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXI [973511] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9735). SPIE. https://doi.org/10.1117/12.2214054