Photoluminescence spectroscopy of carbon nanotube bundles: Evidence for exciton energy transfer

被引：187

作者：

Tan, P. H. ^{[1
]}

Rozhin, A. G. ^{[1
]}

Hasan, T. ^{[1
]}

Hu, P. ^{[1
]}

Scardaci, V. ^{[1
]}

Milne, W. I. ^{[1
]}

Ferrari, A. C. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Engn, Cambridge CB3 0FA, England

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 13期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.99.137402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate photoluminescence of nanotube bundles. Their spectra are explained by exciton energy transfer between adjacent tubes, whereby excitation of large gap tubes induces emission from smaller gap ones. The consequent relaxation rate is faster than nonradiative recombination, leading to enhanced photoluminescence of acceptor tubes.

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