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Electrical and optical characteristics of hydrogen-plasma treated ZnO nanoneedles
Cited 23 time in
Web of Science
Cited 24 time in Scopus
- Authors
- 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
- 1071-1023
http://dx.doi.org/10.1116/1.2037667
- Language
- English
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