Observation of rapid Auger recombination in optically excited semiconducting carbon nanotubes

被引：186

作者：

Wang, F

Dukovic, G

Knoesel, E

Brus, LE

Heinz, TF

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

[2] Columbia Univ, Dept Elect Engn, New York, NY 10027 USA

[3] Columbia Univ, Dept Chem, New York, NY 10027 USA

[4] Rowan Univ, Dept Phys & Astron, Glassboro, NJ 08028 USA

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 24期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.70.241403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Time-resolved fluorescence measurements of single-walled carbon nanotubes (SWNTs) reveal rapid electron-hole pair annihilation when multiple electron-hole pairs are present in a nanotube. The process can be understood as Auger recombination with a rate of similar to1 ps(-1) for just two electron-hole pairs in a 380-nm long SWNT. This efficient nonradiative recombination reflects the strong carrier-carrier interactions in the quasi-one-dimensional SWNTs. In addition to affecting nanotube fluorescence, Auger recombination imposes limitations on the sustained electron-hole density achievable within a SWNT.

引用

页码：1 / 4

页数：4

共 23 条

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