Absolute potential of the Fermi level of isolated single-walled carbon nanotubes
Absolute potential of the Fermi level of isolated single-walled carbon nanotubes
复制标题
孤立单壁碳纳米管费米能级的绝对势
DOI：
10.1103/physrevb.68.035434
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发表时间：
2003
影响因子：
3.7
通讯作者：
K. Murakoshi
中科院分区：
文献类型：
--
作者：
K. Okazaki;Y. Nakato;K. Murakoshi
利用原位共聚焦显微拉曼光谱研究了水溶液中单壁碳纳米管（SWNT）在金电极上的拉曼强度与电化学电位的关系。从势的依赖关系估计了单个管的费米能级的绝对势。观察表明，管的功函数以与单壁碳纳米管的直径成反比的方式变得更大。金属管的结构依赖性大于半导体管。
Electrochemical potential dependence of Raman intensity of isolated single-walled carbon nanotubes (SWNT) on gold electrode in aqueous solution was investigated employing in situ resonant confocal micro Raman spectroscopy. Absolute potential of the Fermi level of individual tubes was estimated from the potential dependence. Observations suggest that the work function of the tube becomes larger in a manner inversely proportional to the diameter of SWNT. The structural dependence of a metallic tube is larger than that of a semiconducting tube.