Exciton effects in carbon nanotubes

被引：61

作者：

Pedersen, TG ^{[1
]}

机构：

[1] Univ Aalborg, Inst Phys, DK-9220 Aalborg, Denmark

来源：

CARBON | 2004年 / 42卷 / 5-6期

关键词：

carbon nanotubes; optical properties;

D O I：

10.1016/j.carbon.2003.12.028

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：

Exciton effects in quasi-one-dimensional materials such as carbon nanotubes are expected to be important due to confinement of electrons and holes. We present a simple picture of these effects based on an effective mass description of electron-hole pairs moving on the surface of a cylinder. A compilation of results for different geometries shows that the exciton binding energy follows the same dependence on diameter and chiral angle as the measured excitation energy. The exciton effects are found be substantial and produce a complete rearrangement of the absorption spectrum. (C) 2003 Elsevier Ltd. All rights reserved.

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页码：1007 / 1010

页数：4

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