Applied Science and Convergence Technology

The Korean Vacuum Society (한국진공학회)
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Fabrication of SnO2/Zn Core-shell Nanowires and Photoluminescence Properties

  • Kong, Myung Ho (Industrial Technology Support Devision, Korea Institute of Materials Science) ;
  • Kwon, Yong Jung (Division of Materials Science and Engineering, Hanyang University) ;
  • Cho, Hong Yeon (Division of Materials Science and Engineering, Hanyang University) ;
  • Kim, Hyoun Woo (Division of Materials Science and Engineering, Hanyang University)
  • Received : 2014.09.24
  • Accepted : 2014.09.30
  • Published : 2014.09.30
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Abstract

We have fabricated $SnO_2$/Zn core-shell nanowires by employing a sputtering technique with a Zn target. Scanning electron microscopy indicated that the surface of the nanowires became rougher by the coating. X-ray diffraction of the coated nanowires exhibited the hexagonal Zn diffraction peaks. TEM image of coated structures showed that shell layer was mainly comprised of hexagonal Zn phase. EDX spectra suggested that the shell layer consisted of Zn elements. The photoluminescence spectrum of the coated nanowires in conjunction with Gaussian fitting analysis revealed that the emission was disconvoluted with three Gaussian functions, which are centered at 2.1 eV in the yellow region, 2.4 eV in the green region, and 3.3 eV in the ultraviolet region. We speculated the possible mechanisms of these emission peaks.

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References

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