The Role of Additive in Diketopyrrolopyrrole-Based Small Molecular Bulk Heterojunction Solar Cells

被引：56
|
作者：
Wang, Hongyu [1 ]
Liu, Feng [2 ]
Bu, Laju [2 ]
Gao, Jun [1 ]
Wang, Cheng [4 ]
Wei, Wei [3 ]
Russell, Thomas P. [2 ]
机构：
[1] Shanghai Univ, Dept Chem, Shanghai 200444, Peoples R China
[2] Univ Massachusetts, Polymer Sci & Engn Dept, Amherst, MA USA
[3] Nanjing Univ Posts & Telecommun, Inst Adv Mat, Nanjing 210046, Jiangsu, Peoples R China
[4] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
来源：
ADVANCED MATERIALS | 2013年 / 25卷 / 45期
基金：
中国国家自然科学基金;
关键词：
organic photovoltaics; morphology; crystallization; X-ray diffraction; ORGANIC PHOTOVOLTAIC CELLS; PROCESSED SMALL-MOLECULE; BAND-GAP; BENZODITHIOPHENE UNIT; EFFICIENCY; POLYMER; PERFORMANCE; MORPHOLOGY; POLY(3-HEXYLTHIOPHENE); BLENDS;
D O I：
10.1002/adma.201302848
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new diketopyrrolopyrrole-based small molecule for solution-processed OPVs is synthesized. The chemical additive has a profound effect in refining the morphology and, thus, significantly increases the efficiencies of the devices. The role of the additive is characterized by various techniques and the additive-driven structure-property relationship is established, which reveals that the additive affects the crystallization, PCBM aggregation, and phase separation. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：6519 / 6525
页数：7
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