The Role of N-Doped Multiwall Carbon Nanotubes in Achieving Highly Efficient Polymer Bulk Heterojunction Solar Cells

被引：185

作者：

Lu, Luyao ^{[1
,2
]}

Xu, Tao ^{[1
,2
]}

Chen, Wei ^{[3
,4
]}

Lee, Ju Min ^{[5
]}

Luo, Zhiqiang ^{[1
,2
]}

Jung, In Hwan ^{[1
,2
]}

Park, Hyung Il ^{[5
]}

Kim, Sang Ouk ^{[5
]}

Yu, Luping ^{[1
,2
]}

机构：

[1] Univ Chicago, Dept Chem, Chicago, IL 60637 USA

[2] Univ Chicago, James Franck Inst, Chicago, IL 60637 USA

[3] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[4] Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USA

[5] Korea Adv Inst Sci & Technol, Inst Basic Sci, Ctr Nanomat & Chem React, Taejon 305701, South Korea

来源：

NANO LETTERS | 2013年 / 13卷 / 06期

基金：

美国国家科学基金会;

关键词：

Organic photovoltaics; bulk heterojunction; carbon nanotube; X-ray scattering; PHOTOVOLTAIC CELLS; PERFORMANCE; ENHANCEMENT; MORPHOLOGY; ADDITIVES; DONOR;

D O I：

10.1021/nl304533j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This paper reports an improved solar cell performance of 8.6% by incorporation of N-doped multiwall carbon nanotubes (N-MCNTs) into BHJ solar cells composed of PTB7 and PC71BM. It was demonstrated for the first time that incorporation of N-MCNTs leads to not only increased nanocrystallite sizes but also smaller phase-separated domain sizes of both PTB7 copolymers and PC71BM from X-ray scattering study. The results show that N-MCNTs could serve as both exciton dissociation centers and charge transfer channels. The enhanced charge dissociation probabilities and effective charge carrier lifetime in the active layer material offer evidence to support the conclusion that N-MCNTs facilitated charge separation and transport.

引用

页码：2365 / 2369

页数：5

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