Effects of Additives on the Morphology of Solution Phase Aggregates Formed by Active Layer Components of High-Efficiency Organic Solar Cells

被引：497
作者：
Lou, Sylvia J. [1 ,2 ]
Szarko, Jodi M. [1 ,2 ]
Xu, Tao [3 ,4 ]
Yu, Luping [1 ,3 ,4 ]
Marks, Tobin J. [1 ,2 ]
Chen, Lin X. [1 ,2 ,5 ]
机构：
[1] Northwestern Univ, Argonne NW Solar Energy Res ANSER Ctr, Evanston, IL 60208 USA
[2] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA
[3] Univ Chicago, Dept Chem, Chicago, IL 60637 USA
[4] Univ Chicago, James Franck Inst, Chicago, IL 60637 USA
[5] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 51期
基金：
美国国家科学基金会;
关键词：
POWER CONVERSION EFFICIENCY; FILM MORPHOLOGY;
D O I：
10.1021/ja2085564
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Processing additives are used in organic photovoltaic systems to optimize the active layer film morphology. However, the actual mechanism is not well understood. Using X-ray scattering techniques, we analyze the effects of an additive diiodooctane (DIO) on the aggregation of a high-efficiency donor polymer PTB7 and an acceptor molecule PC71BM under solar cell processing conditions. We conclude that DIO selectively dissolves PC71BM aggregates, allowing their intercalation into PTB7 domains, thereby optimizing both the domain size and the PTB7-PC71BM interface.
引用
收藏
页码：20661 / 20663
页数：3
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