Kumari, Latha ; Subramanyam, S. V. (2006) Optical properties and electrical transport in intercalated amorphous carbon Materials Research Bulletin, 41 (11). pp. 2000-2006. ISSN 0025-5408
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.materresbull.2006.04.009
Abstract
Iodine and sulfur incorporated amorphous carbon (a-C) films are prepared by vapor phase pyrolysis of carbon rich organic precursor, maleic anhydride. Transmission electron microscopy (TEM) analysis depicts the intercalation induced local structural ordering and evolution of nano-graphitic phases in the sample. An X-ray photoelectron spectroscopy (XPS) study on these samples confirms the presence of intercalates. The study of optical properties of the samples by UV-vis absorption spectrometry accounts for a decrease in optical bandgap and Urbach energy with impurity incorporation and increase in pyrolysis temperature. This refers to induced structural ordering, decrease in disorder and increase in sp2 or π-sites in the sample. Electrical conductivity measurement on a-C samples reveals increase in conductivity with pyrolysis temperature induced by iodine and sulfur incorporation.
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
Keywords: | A. Amorphous Materials; B. Vapor Deposition; C. Electron Microscopy; D. Optical Properties; D. Electrical Properties |
ID Code: | 51535 |
Deposited On: | 28 Jul 2011 14:41 |
Last Modified: | 28 Jul 2011 14:41 |
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