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Electrical and optical characteristics of hydrogen-plasma treated ZnO nanoneedles

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Authors
Yoo, Jinkyoung; Park, Won Il; Yi, Gyu-Chul
Issue Date
2005-09-12
Publisher
American Vacuum Society
Citation
J. Vac. Sci. Technol. B 23, 1970 (2005)
Abstract
We report on optical characteristics as well as electron emission of hydrogen-plasma treated ZnO nanoneedle arrays. The nanoneedle arrays were vertically grown on Si substrates using catalyst-free metalorganic chemical vapor deposition and subsequently treated by hydrogen plasma at room temperature. After hydrogen plasma treatment, the field emission characteristic curves of nanoneedle arrays exhibited significantly reduced turn-on field and increased emission current density, and the electrical conductivity was increased. In addition, low temperature photoluminesence (PL) measurements indicate that a neutral-donor bound exciton PL peak intensity was increased by the hydrogen- plasma treatment. These effects of the plasma treatment on the physical properties may be explained in terms of hydrogen doping effect.
ISSN
1071-1023http://dx.doi.org/10.1116/1.2037667
Language
English
URI
http://hdl.handle.net/10371/5361
DOI
https://doi.org/10.1116/1.2037667
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College of Natural Sciences (자연과학대학)Dept. of Physics and Astronomy (물리·천문학부)Physics (물리학전공)Journal Papers (저널논문_물리학전공)
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