Low-temperature synthesized ZnO nanoneedles: XPS and PL analysis
SCIE
SCOPUS
- Title
- Low-temperature synthesized ZnO nanoneedles: XPS and PL analysis
- Authors
- Park, DS; Tak, YJ; Kim, JY; Yong, KJ
- Date Issued
- 2007-12
- Publisher
- WORLD SCIENTIFIC PUBL CO PTE LTD
- Abstract
- Evolution of morphology change was investigated for ZnO nanoneedle array grown by low-temperature MOCVD. Well-aligned ZnO nanoneedle array was deposited on the ZnO buffer-film/Si substrate at temperatures below 500 degrees C. A rod-shaped ZnO nanowire in the initial growth stage changed into needle-shaped as the deposition proceeds. ZnO nanoneedle array deposited on the annealed buffer-film showed better alignment compared to that deposited on the as-grown film. XPS analysis showed that Zn 2p peak has a single binding energy state of a stoichiometric Zn-O bond while O 1s peak has three different chemical binding states. Highly crystalline ZnO nanoneedle array showed a strong bandedge emission at 380 nm in photoluminescence measurements.
- Keywords
- ZnO nanoneedle; photoluminescence; MOCVD; XPS; CONTROLLED GROWTH; NANOROD ARRAYS; SI; PHOTOLUMINESCENCE; NANOSTRUCTURES; NANOWIRES; FILMS; OXIDE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22988
- DOI
- 10.1142/S0218625X07010639
- ISSN
- 0218-625X
- Article Type
- Article
- Citation
- SURFACE REVIEW AND LETTERS, vol. 14, no. 6, page. 1061 - 1065, 2007-12
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