Temperature Dependence of G− Mode in Raman Spectra of Metallic Single-Walled Carbon Nanotubes
Joint Authors
Wen, Zhijie
Zhang, Xiuyun
He, Maoshuai
Wu, Qianru
Tian, Lei
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-07-17
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
The temperature evolution of G mode in the Raman spectra of surface grown single-walled carbon nanotubes (SWNTs) is investigated.
It is revealed that the intensity of G− mode in Raman spectra varies with the measurement temperature.
The intensity variation of the G− mode is synchronized to that of the radial breathing mode, which is sensitive to the resonance condition (∣EL−Eii∣).
Such an intensity evolution is associated with the temperature-induced change of Eii.
That is, the intensity of G−, an indication of electron-phonon coupling in metallic SWNTs, can be greatly enhanced only when the laser energy well matches the transition energy of nanotubes (Eii).
In other words, the window for observing asymmetric and broad G− mode is very narrow.
This work further confirms that the G− mode in the Raman spectrum mainly arises from metallic SWNTs, and caution should be paid when using the intensity ratio of G−/G+ to estimate the percentage of metallic SWNTs in products.
American Psychological Association (APA)
Wu, Qianru& Wen, Zhijie& Zhang, Xiuyun& Tian, Lei& He, Maoshuai. 2018. Temperature Dependence of G− Mode in Raman Spectra of Metallic Single-Walled Carbon Nanotubes. Journal of Nanomaterials،Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1194003
Modern Language Association (MLA)
Wu, Qianru…[et al.]. Temperature Dependence of G− Mode in Raman Spectra of Metallic Single-Walled Carbon Nanotubes. Journal of Nanomaterials No. 2018 (2018), pp.1-6.
https://search.emarefa.net/detail/BIM-1194003
American Medical Association (AMA)
Wu, Qianru& Wen, Zhijie& Zhang, Xiuyun& Tian, Lei& He, Maoshuai. Temperature Dependence of G− Mode in Raman Spectra of Metallic Single-Walled Carbon Nanotubes. Journal of Nanomaterials. 2018. Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1194003
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1194003