Abstract
Graphitic features are detected on 4H-SiC surface following oxidation and etching using surface enhanced Raman spectroscopy (SERS). The electronic state of the carbon is sp 2 on both the Si- and C-faces of 4H-SiC. The structures of the "carbon clusters" consist of two-dimensional graphitic flakes less than 2 nm and one-dimensional polyenes. The degree of graphitization on the C-face SiC is higher than those on the Si-face SiC. This study provides experimental evidence for "carbon clusters" existing on SiC surfaces following oxidation at atmospheric pressure and demonstrates that SERS is an effective technique to probe low concentration species on the SiC surface.
| Original language | English |
|---|---|
| Pages (from-to) | 3495-3497 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 85 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - Oct 18 2004 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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Graphitic features on SiC surface following oxidation and etching using surface enhanced Raman spectroscopy. / Lu, Weijie; Feldman, Leonard C; Song, Y.; Dhar, S.; Collins, W. E.; Mitchel, W. C.; Williams, J. R.
In: Applied Physics Letters, Vol. 85, No. 16, 18.10.2004, p. 3495-3497.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Graphitic features on SiC surface following oxidation and etching using surface enhanced Raman spectroscopy
AU - Lu, Weijie
AU - Feldman, Leonard C
AU - Song, Y.
AU - Dhar, S.
AU - Collins, W. E.
AU - Mitchel, W. C.
AU - Williams, J. R.
PY - 2004/10/18
Y1 - 2004/10/18
N2 - Graphitic features are detected on 4H-SiC surface following oxidation and etching using surface enhanced Raman spectroscopy (SERS). The electronic state of the carbon is sp 2 on both the Si- and C-faces of 4H-SiC. The structures of the "carbon clusters" consist of two-dimensional graphitic flakes less than 2 nm and one-dimensional polyenes. The degree of graphitization on the C-face SiC is higher than those on the Si-face SiC. This study provides experimental evidence for "carbon clusters" existing on SiC surfaces following oxidation at atmospheric pressure and demonstrates that SERS is an effective technique to probe low concentration species on the SiC surface.
AB - Graphitic features are detected on 4H-SiC surface following oxidation and etching using surface enhanced Raman spectroscopy (SERS). The electronic state of the carbon is sp 2 on both the Si- and C-faces of 4H-SiC. The structures of the "carbon clusters" consist of two-dimensional graphitic flakes less than 2 nm and one-dimensional polyenes. The degree of graphitization on the C-face SiC is higher than those on the Si-face SiC. This study provides experimental evidence for "carbon clusters" existing on SiC surfaces following oxidation at atmospheric pressure and demonstrates that SERS is an effective technique to probe low concentration species on the SiC surface.
UR - http://www.scopus.com/inward/record.url?scp=9744245984&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=9744245984&partnerID=8YFLogxK
U2 - 10.1063/1.1804610
DO - 10.1063/1.1804610
M3 - Article
AN - SCOPUS:9744245984
VL - 85
SP - 3495
EP - 3497
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 16
ER -