Dependence of exciton transition energy of single-walled carbon nanotubes on surrounding dielectric materials

被引：93

作者：

Miyauchi, Y.

Saito, R.

Sato, K.

Ohno, Y.

Iwasaki, S.

Mizutani, T.

Jiang, J.

Maruyama, S. ^{[1
]}

机构：

[1] Univ Tokyo, Dept Mech Engn, Tokyo 1138656, Japan

[2] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[3] CREST, Sendai, Miyagi 9808578, Japan

[4] Nagoya Univ, Dept Quantum Engn, Nagoya, Aichi 4648603, Japan

[5] N Carolina State Univ, Ctr High Performance Simulat, Raleigh, NC 27695 USA

[6] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

来源：

CHEMICAL PHYSICS LETTERS | 2007年 / 442卷 / 4-6期

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/j.cplett.2007.06.018

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We theoretically investigate the environmental effect for optical transition energies of single-walled carbon nanotubes (SWNTs), by calculating the exciton transition energies of SWNTs. The static dielectric constants used in the exciton calculation can be expressed as a function of the dielectric constants of the surrounding material and that of the SWNT, in which the static and dynamic dielectric constants of the SWNT represent the screening effect of core electrons and the valence pi electrons, respectively. The calculated results reproduce the environmental effect of the experimental transition energies for various surrounding materials and for various diameters of SWNTs. (c) 2007 Elsevier B.V. All rights reserved.

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页码：394 / 399

页数：6

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