Optical properties of metallic and semiconducting single-wall carbon nanotubes

被引：12
|
作者：
Miyata, Yasumitsu [1 ]
Yanagi, Kazuhiro [1 ,2 ]
Maniwa, Yutaka [2 ,3 ]
Kataura, Hiromichi [1 ,2 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, NRI, Tsukuba, Ibaraki 3058562, Japan
[2] CREST, JST, Kawaguchi, Saitama 3300012, Japan
[3] Tokyo Metropolitan Univ, Dept Phys, Tokyo 1920397, Japan
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2008年 / 245卷 / 10期
基金：
日本学术振兴会;
关键词：
D O I：
10.1002/pssb.200879648
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Optical properties of high purity metallic and semiconducting single-wall carbon nanotubes (SWCNTs) were investigated from far infrared to ultraviolet by optical absorption spectroscopy. It was found that the metallic SWCNT thin film has larger infrared absorption intensity than the semiconducting one. Furthermore, little changes in the optical absorption spectrum and the DC sheet resistance against molecular physisorptions were revealed in the metallic SWCNTs thin film. The stability of the metallic SWCNTs results from their constant electronic density of state near the Fermi level. On the other hand, the existence of semiconducting SWCNTs in the films makes their infrared absorption intensity and the sheet resistance more sensitive to the adsorption of molecules mainly due to carrier doping. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：2233 / 2238
页数：6
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