Exciton decay dynamics in individual carbon nanotubes at room temperature

被引：32

作者：

Gokus, Tobias ^{[1
,2
]}

Hartschuh, Achim ^{[1
,2
]}

Harutyunyan, Hayk ^{[3
,4
]}

Allegrini, Maria ^{[3
,4
]}

Hennrich, Frank ^{[5
]}

Kappes, Manfred ^{[5
]}

Green, Alexander A. ^{[6
]}

Hersam, Mark C. ^{[6
]}

Araujo, Paulo T. ^{[7
]}

Jorio, Ado ^{[7
]}

机构：

[1] Univ Munich, Dept Chem & Biochem, D-81377 Munich, Germany

[2] CeNS, D-81377 Munich, Germany

[3] Univ Pisa, Dipartimento Fis E Fermi, I-56127 Pisa, Italy

[4] CNISM, I-56127 Pisa, Italy

[5] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany

[6] Northwestern Univ, Dept Chem, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[7] Univ Fed Minas Gerais, Dept Fis, BR-30123970 Belo Horizonte, MG, Brazil

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 15期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2913009

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We studied the exciton decay dynamics of individual semiconducting single-walled carbon nanotubes at room temperature using time-resolved photoluminescence spectroscopy. The photoluminescence decay from nanotubes of the same (n,m) type follows a single exponential decay function, however, with lifetimes varying between about 1 and 40 ps from nanotube to nanotube. A correlation between broad photoluminescence spectra and short lifetimes was found and explained by defects promoting both nonradiative decay and vibronic dephasing. (C) 2008 American Institute of Physics.

引用

页数：3

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