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A Raman spectral characterization of thin-film carbon : the impact of source wavelength variation Ahsan, Md. Ashraf Ul
Abstract
Raman spectroscopy is ubiquitous in the study of thin-film carbon. Often, the Raman spectrum of a thin-film carbon is characterized in terms of the location of two distinct peaks, a D-peak located around 1360 cm-¹ and a G-peak located about 1580 cm-¹. Many of the material properties of thin-film carbon have been related either to the ratio of the D-peak and G-peak amplitudes or to the ratio of the D-peak and G-peak integrated intensities. In this analysis, I aim to assess whether or not a relationship exists between these two distinct ratios. Through an examination of the Raman spectra associated with a number of representative carbon thin-films, it has been established that the amplitude ratio is indeed related to the corresponding integrated intensity ratio. The samples of thin-film carbon that are probed using Raman spectroscopy have been prepared through the use of plasma-enhanced chemical vapor deposition and rf and dc magnetron sputtering. The slope of this relationship is shown to be related to the source wavelength, larger source wavelengths corresponding to a smaller slope. The scatter about the resultant linear fit is also found to increase as the source wavelength is increased. Recommendation for further study are offered.
Item Metadata
Title |
A Raman spectral characterization of thin-film carbon : the impact of source wavelength variation
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2019
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Description |
Raman spectroscopy is ubiquitous in the study of thin-film carbon. Often, the Raman spectrum of a thin-film carbon is characterized in terms of the location of two distinct peaks, a D-peak located around 1360 cm-¹ and a G-peak located about 1580 cm-¹. Many of the material properties of thin-film carbon have been related either to the ratio of the D-peak and G-peak amplitudes or to the ratio of the D-peak and G-peak integrated intensities. In this analysis, I aim to assess whether or not a relationship exists between these two distinct ratios. Through an examination of the Raman spectra associated with a number of representative carbon thin-films, it has been established that the amplitude ratio is indeed related to the corresponding integrated intensity ratio. The samples of thin-film carbon that are probed using Raman spectroscopy have been prepared through the use of plasma-enhanced chemical vapor deposition and rf and dc magnetron sputtering. The slope of this relationship is shown to be related to the source wavelength, larger source wavelengths corresponding to a smaller slope. The scatter about the resultant linear fit is also found to increase as the source wavelength is increased. Recommendation for further study are offered.
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Genre | |
Type | |
Language |
eng
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Date Available |
2019-04-29
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0378508
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2019-05
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Campus | |
Scholarly Level |
Graduate
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Rights URI | |
Aggregated Source Repository |
DSpace
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Rights
Attribution-NonCommercial-NoDerivatives 4.0 International