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| 題名: | Surface-enhanced Raman scattering of suspended monolayer graphene |
| 作者: | 黃貞翰;Huang, Cheng-Wen;Lin, Bing-Jie;Lin, Hsing-Ying;Huang, Chen-Han;Shih, Fu-Yu;Wang, Wei-Hua;Liu, Chih-Yi;Chui, Hsiang-Chen |
| 貢獻者: | 生醫理工學院生醫科學與工程學系 |
| 關鍵詞: | Chemistry and Materials Science;EMN Meeting;Materials Science;Molecular Medicine;Nano Express;Nanochemistry;Nanoscale Science and Technology;Nanotechnology;Nanotechnology and Microengineering;Optical properties;Silver;Spectroscopy;Substrates |
| 日期: | 2013-01-01 |
| 上傳時間: | 2026-04-23 11:21:59 (UTC+8) |
| 出版者: | Springer New York;New York: Springer New York |
| 摘要: | 摘要： The interactions between phonons and electrons induced by the dopants or the substrate of graphene in spectroscopic investigation reveal a rich source of interesting physics. Raman spectra and surface-enhanced Raman spectra of supported and suspended monolayer graphenes were measured and analyzed systemically with different approaches. The weak Raman signals are greatly enhanced by the ability of surface-enhanced Raman spectroscopy which has attracted considerable interests. The technique is regarded as wonderful and useful tool, but the dopants that are produced by depositing metallic nanoparticles may affect the electron scattering processes of graphene. Therefore, the doping and substrate influences on graphene are also important issues to be investigated. In this work, the peak positions of G peak and 2D peak, the I 2D / I G ratios, and enhancements of G and 2D bands with suspended and supported graphene flakes were measured and analyzed. The peak shifts of G and 2D bands between the Raman and SERS signals demonstrate the doping effect induced by silver nanoparticles by n-doping. The I 2D / I G ratio can provide a more sensitive method to carry out the doping effect on the graphene surface than the peak shifts of G and 2D bands. The enhancements of 2D band of suspended and supported graphenes reached 138, and those of G band reached at least 169. Their good enhancements are helpful to measure the optical properties of graphene. The different substrates that covered the graphene surface with doping effect are more sensitive to the enhancements of G band with respect to 2D band. It provides us a new method to distinguish the substrate and doping effect on graphene. PACS 78.67.Wj (optical properties of graphene); 74.25.nd (Raman and optical spectroscopy); 63.22.Rc (phonons in graphene)
其他題名： Nanoscale Res Lett
出版者： New York: Springer New York
出版日期： 2013-11-15
出處： Nanoscale research letters, 2013-11, Vol.8 (1), p.480-480, Article 480
資源來源： Publicly Available Content Database
版權： Huang et al.; licensee Springer. 2013. This article is published under license to BioMed Central Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution License ( ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
版權： The Author(s) 2013
版權： Copyright © 2013 Huang et al.; licensee Springer. 2013 Huang et al.; licensee Springer.
識別號： ISSN: 1556-276X
識別號： ISSN: 1931-7573
識別號： EISSN: 1556-276X
識別號： DOI: 10.1186/1556-276X-8-480
識別號： PMID: 24229405 |
| 顯示於類別: | [生醫科學與工程學系] 期刊論文
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