Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9781276 | Progress in Solid State Chemistry | 2005 | 6 Pages |
Abstract
SnO2 nanowhiskers were synthesized by thermal oxidation with and without a gold film as a catalyst. The SEM images reveal wire-like and rod-shaped nanowhiskers about several hundred micrometers in length and 100Â nm in diameter. The three observed Raman peaks at 474, 632, and 774Â cmâ1 indicate the typical rutile phase which is in agreement with the X-ray diffraction results. The photoluminescence properties were measured at room temperature. The peaks at 342Â nm corresponding to the excitation transitions from the conduction band to the valence band of the SnO2 nanowhiskers were not observed. However, a strong emission band at â¼600Â nm was detected indicating the existence of oxygen vacancies in both samples. A new emission band at â¼398Â nm was also observed in the sample with the gold film and it could be attributed to the near band-edge emission.
Keywords
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Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
S.H. Luo, Q. Wan, W.L. Liu, M. Zhang, Z.T. Song, C.L. Lin, Paul K. Chu,