Synthesis of nitrogen-doped single-walled carbon nanotubes and monitoring of doping by Raman spectroscopy

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	Synthesis of nitrogen-doped single-walled carbon nanotubes and monitoring of doping by Raman spectroscopy
	Wu, MH ; Li, X ; Pan, D ; Liu, L ; Yang, XX ; Xu, Z ; Wang, WL ; Sui, Y ; Bai, XD
刊名	CHINESE PHYSICS B
	2013
卷号	22 期号:8
关键词	single-walled carbon nanotubes nitrogen doping chemical vapor deposition Raman spectroscopy
ISSN号	1674-1056
通讯作者	Wang, WL (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	Nitrogen-doped single-walled carbon nanotubes (CNx-SWNTs) with tunable dopant concentrations were synthesized by chemical vapor deposition (CVD), and their structure and elemental composition were characterized by using transmission electron microscopy (TEM) in combination with electron energy loss spectroscopy (EELS). By comparing the Raman spectra of pristine and doped nanotubes, we observed the doping-induced Raman G band phonon stiffening and 2D band phonon softening, both of which reflect doping-induced renormalization of the electron and phonon energies in the nanotubes and behave as expected in accord with the n-type doping effect. On the basis of first principles calculations of the distribution of delocalized carrier density in both the pristine and doped nanotubes, we show how the n-type doping occurs when nitrogen heteroatoms are substitutionally incorporated into the honeycomb tube-shell carbon lattice.
资助信息	National Natural Science Foundation of China [11004230, 51172273, 11290161, 11027402]; National Key Basic Research Program of China [2012CB933003, 2013CB932603]; Innovative Project of the Chinese Academy of Sciences [KJCX2-YW-W35]
语种	英语
公开日期	2014-01-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57544]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wu, MH,Li, X,Pan, D,et al. Synthesis of nitrogen-doped single-walled carbon nanotubes and monitoring of doping by Raman spectroscopy[J]. CHINESE PHYSICS B,2013,22(8).
APA	Wu, MH.,Li, X.,Pan, D.,Liu, L.,Yang, XX.,...&Bai, XD.(2013).Synthesis of nitrogen-doped single-walled carbon nanotubes and monitoring of doping by Raman spectroscopy.CHINESE PHYSICS B,22(8).
MLA	Wu, MH,et al."Synthesis of nitrogen-doped single-walled carbon nanotubes and monitoring of doping by Raman spectroscopy".CHINESE PHYSICS B 22.8(2013).