Structural, optical and electrical properties of sulfur-incorporated amorphous carbon films
Data(s) |
01/05/2009
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Resumo |
Amorphous carbon-sulfur (a-C:S) composite films were prepared by vapor phase pyrolysis technique. The structural changes in the a-C:S films were investigated by electron microscopy. A powder X-ray diffraction (XRD) study depicts the two-phase nature of a sulfur-incorporated a-C system. The optical bandgap energy shows a decreasing trend with an increase in the sulfur content and preparation temperature. This infers a sulfur incorporation and pyrolysis temperature induced reduction in structural disorder or increase in sp (2) or pi-sites. The presence of sulfur (S 2p) in the a-C:S sample is analyzed by the X-ray photoelectron spectroscopy (XPS). The sp (3)/sp (2) hybridization ratio is determined by using the XPS C 1s peak fitting, and the results confirm an increase in sp (2) hybrids with sulfur addition to a-C. The electrical resistivity variation in the films depends on both the sulfur concentration and the pyrolysis temperature. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/19655/1/5.pdf Kumari, Latha and Subramanyam, SV (2009) Structural, optical and electrical properties of sulfur-incorporated amorphous carbon films. In: Applied Physics A: Materials Science & Processing, 95 (2). pp. 343-349. |
Publicador |
Springer |
Relação |
http://www.springerlink.com/content/u7n127k971370121/ http://eprints.iisc.ernet.in/19655/ |
Palavras-Chave | #Physics |
Tipo |
Journal Article PeerReviewed |