Prolonging Charge Separation in P3HT-SWNT Composites Using Highly Enriched Semiconducting Nanotubes

被引：98

作者：

Holt, Josh M. ^{[1
]}

Ferguson, Andrew J. ^{[1
]}

Kopidakis, Nikos ^{[1
]}

Larsen, Brian A. ^{[1
]}

Bult, Justin ^{[1
]}

Rumbles, Garry ^{[1
]}

Blackburn, Jeffrey L. ^{[1
]}

机构：

[1] Natl Renewable Energy Lab, Chem & Mat Sci Ctr, Golden, CO 80401 USA

来源：

NANO LETTERS | 2010年 / 10卷 / 11期

关键词：

Single-walled carbon nanotubes; P3HT; charge generation; charge recombination; time-resolved microwave conductivity; organic photovoltaic; polythiophene; CARBON NANOTUBES; EFFICIENCY;

D O I：

10.1021/nl102753z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Single-walled carbon nanotubes (SWNTs) have potential as electron acceptors in organic photovoltaics (OPVs), but the currently low-power conversion efficiencies of devices remain largely unexplained. We demonstrate effective redispersion of isolated, highly enriched semiconducting and metallic SWNTs into poly(3-hexylthiophene) (P3HT). We use these enriched blends to provide the first experimental evidence of the negative impact of metallic nanotubes. Time-resolved microwave conductivity reveals that the long-lived carrier population can be significantly increased by incorporating highly enriched semiconducting SWNTs into semiconducting polymer composites.

引用

页码：4627 / 4633

页数：7

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