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Fabrication of SnO2/Zn Core-shell Nanowires and Photoluminescence Properties

Title
Fabrication of SnO2/Zn Core-shell Nanowires and Photoluminescence Properties
Other Titles
Zn Core-shell Nanowires and Photoluminescence Properties
Author
김현우
Keywords
$SnO_2$ nanowires; Zn shell; Photoluminescence
Issue Date
2014-09
Publisher
The Korean Vacuum Society, 2014.
Citation
Applied science and convergence technology, 2014, 23(5), p.301-307
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.
URI
http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=E1VSCA_2014_v23n5_282http://hdl.handle.net/20.500.11754/48711
ISSN
1225-8822; 2288-6559
DOI
10.5757/ASCT.2014.23.5.282
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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