Electrical and optical characteristics of hydrogen-plasma treated ZnO nanoneedles
SCIE
SCOPUS
- Title
- Electrical and optical characteristics of hydrogen-plasma treated ZnO nanoneedles
- Authors
- Yoo, J; Park, WI; Yi, GC
- Date Issued
- 2005-09
- Publisher
- A V S AMER INST PHYSICS
- 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. (c) 2005 American Vacuum Society.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/11278
- DOI
- 10.1116/1.2037667
- ISSN
- 1071-1023
- Article Type
- Article
- Citation
- JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, vol. 23, no. 5, page. 1970 - 1974, 2005-09
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