Femtosecond dynamics in single wall carbon nanotube/poly(3-hexylthiophene) composites

被引：14

作者：

Lioudakis, Emmanouil ^{[1
]}

Othonos, Andreas ^{[1
]}

Alexandrou, Ioannis ^{[2
]}

机构：

[1] Univ Cyprus, Res Ctr Ultrafast Sci, Dept Phys, CY-1678 Nicosia, Cyprus

[2] Univ Liverpool, Liverpool L69 3GJ, Merseyside, England

来源：

NANOSCALE RESEARCH LETTERS | 2008年 / 3卷 / 08期

关键词：

ultrafast spectroscopy; single wall carbon nanotubes; exciton dissociation;

D O I：

10.1007/s11671-008-9149-x

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Femtosecond transient absorption measurements on single wall carbon nanotube/poly(3-hexylthiophene) composites are used to investigate the relaxation dynamics of this blended material. The influence of the addition of nanotubes in polymer matrix on the ultrashort relaxation dynamics is examined in detail. The introduction of nanotube/polymer heterojunctions enhances the exciton dissociation and quenches the radiative recombination of composites. The relaxation dynamics of these composites are compared with the fullerene derivative-polymer composites with the same matrix. These results provide explanation to the observed photovoltaic performance of two types of composites.

引用

页码：278 / 283

页数：6

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