(n,m) Assignments and quantification for single-walled carbon nanotubes   on SiO2/Si substrates by resonant Raman spectroscopy

doi:10.1039/c5nr01076d

CORC > 北京大学 > 化学与分子工程学院

	(n,m) Assignments and quantification for single-walled carbon nanotubes on SiO2/Si substrates by resonant Raman spectroscopy
	Zhang, Daqi ; Yang, Juan ; Yang, Feng ; Li, Ruoming ; Li, Meihui ; Ji, Dong ; Li, Yan
刊名	NANOSCALE
	2015
关键词	ELECTRON-DIFFRACTION FREQUENCY GROWTH MODES
DOI	10.1039/c5nr01076d
英文摘要	The single-walled carbon nanotubes (SWNTs) on silicon substrates are a promising candidate for the next generation of electronic and photoelectronic devices, therefore an easy, convenient, and nondestructive method for characterizing such samples is quite important and strongly needed. In this study, we provide in detail such a method to assign (n,m) indices with considerable accuracy through resonant Raman spectra analysis. We developed an equation of omega(RBM) = 235.9/d(t) + 5.5 for SWNTs grown by Ni, Co, and Fe catalysts on SiO2/Si substrates in the d(t) range of 1.2-2.1 nm. This method was further utilized to make (n,m) assignments and quantification for our SWNTs catalyzed by W6Co7, which is highly enriched with (12,6). The less abundant chiralities in the samples were also assigned and the contents were analyzed using a counting-based method. Moreover, these chirality-specified samples allowed us to collect 1330 RBM data for the single chirality (12,6) and the RBM variation was found to be no larger than +/- 2.5 cm(-1). A step-by-step procedure is also provided as a general guide for (n,m) assignments.; NSFC [21125103, 91333105]; MOST [2011CB933003]; Beijing Higher Education Young Elite Teacher Project [YETP0007]; Beijing Municipal Science & Technology Commission [D141100000614001]; SCI(E); EI; ARTICLE; yang_juan@pku.edu.cn; yanli@pku.edu.cn; 24; 10719-10727; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/421206]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhang, Daqi,Yang, Juan,Yang, Feng,et al. (n,m) Assignments and quantification for single-walled carbon nanotubes on SiO2/Si substrates by resonant Raman spectroscopy[J]. NANOSCALE,2015.
APA	Zhang, Daqi.,Yang, Juan.,Yang, Feng.,Li, Ruoming.,Li, Meihui.,...&Li, Yan.(2015).(n,m) Assignments and quantification for single-walled carbon nanotubes on SiO2/Si substrates by resonant Raman spectroscopy.NANOSCALE.
MLA	Zhang, Daqi,et al."(n,m) Assignments and quantification for single-walled carbon nanotubes on SiO2/Si substrates by resonant Raman spectroscopy".NANOSCALE (2015).