Effect of Solvent-Assisted Nanoscaled Organo-Gels on Morphology and Performance of Organic Solar Cells

被引：20

作者：

Zuo, Li-Jian ^{[1
,2
]}

Hu, Xiao-Lian ^{[1
,2
]}

Ye, Tao ^{[1
,2
]}

Andersen, Thomas R. ^{[3
]}

Li, Han-Ying ^{[1
,2
]}

Shi, Min-Min ^{[1
,2
]}

Xu, Mingsheng ^{[1
,2
]}

Ling, Jun ^{[1
,2
]}

Zheng, Qiang ^{[1
,2
]}

Xu, Jun-Ting ^{[1
,2
]}

Bundgaard, Eva ^{[3
]}

Krebs, Frederik C. ^{[3
]}

Chen, Hong-Zheng ^{[1
,2
]}

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, MOE Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China

[3] Tech Univ Denmark, Dept Energy Convers & Storage, DK-4000 Roskilde, Denmark

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2012年 / 116卷 / 32期

基金：

中国国家自然科学基金; 新加坡国家研究基金会; 国家高技术研究发展计划(863计划);

关键词：

CONJUGATED POLYMER; INTERPENETRATING NETWORK; CHARGE-TRANSPORT; HIGHLY EFFICIENT; POLY(3-HEXYLTHIOPHENE); AGGREGATION; EVOLUTION; GELATION; DEVICES; BLENDS;

D O I：

10.1021/jp3049444

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper reports how the morphology of a polymer-fullerene derivative blend is tuned via the different aggregate states of the polymer in solutions. Based on a copolymer with benzodiothiophene and thiophene-3-carboxylate as alternating units (PBDTCT), we explored the polymer aggregation (i.e., organo-gels) behavior as a function of steric hindrance of aromatic solvents imposed by substituents. We showed that the size of organo-gels decreased as the substituents of solvents got larger. Also, the phase separation and domain size of the subsequent spin-coated films increased monotonically with that of the organo-gels in solution. Through this knowledge, we eventually achieve controlled morphology and optimized organic solar cells (OSCs) performance. Our results present a significant step forward for understanding the self-assembly behavior of conjugated polymers, control of their morphology and optimization of OSC performance.

引用

页码：16893 / 16900

页数：8

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