Spectroscopy of single- and double-wall carbon nanotubes in different environments
Spectroscopy of single- and double-wall carbon nanotubes in different environments
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DOI：
10.1021/nl050069a
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发表时间：
2005-03-01
期刊：
影响因子：
10.8
通讯作者：
Flahaut, E
中科院分区：
文献类型：
--
作者：
Hertel, T;Hagen, A;Flahaut, E
单独的单壁碳纳米管（SWNTs）和双壁碳纳米管（DWNTs）悬浮在水中，使用钠-胆酸和其他表面活性剂进行光学研究。利用时间分辨光致发光（PL）光谱技术研究了小直径管的手性、直径以及环境对非辐射衰变的影响。这些研究为低碳纳米管中小直径芯管的发光以及与环境相互作用引起的非辐射衰变与管直径和激子红移的相关性提供了证据。
Individual single-wall carbon nanotubes (SWNTs) and double-wall carbon nanotubes (DWNTs) were suspended in water for optical studies using sodium-cholate and other surfactants. We used time-resolved photoluminescence (PL) spectroscopy to study the influence of tube chirality and diameter as well as of the environment on nonradiative decay in small diameter tubes. The studies provide evidence for PL from small diameter core tubes in DWNTs and for a correlation of nonradiative decay with tube diameter and exciton red shift as induced by interaction with the environment.