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Regulating Molecular Aggregations of Polymers via Ternary Copolymerization Strategy for Efficient Solar Cells
Wang, Qian1; Wang, Yingying2,3; Zheng, Wei1; Shahid, Bilal2; Qiu, Meng2; Wang, Di1; Zhu, Dangqiang2; Yang, Renqiang2
2017-09-20
发表期刊ACS APPLIED MATERIALS & INTERFACES
卷号9期号:37页码:32126-32134
摘要For many high-performance photovoltaic materials in polymer solar cells (PSCs), the active layers usually need to be spin-coated at high temperature due to the strong intermolecular aggregation of donor polymers, which is unfavorable in device repeatability and large-scale PSC printing. In this work, we adopted a ternary copolymerization strategy to regulate polymer solubility and molecular aggregation. A series of D-A(1)-D-A(2) random polymers based on different acceptors, strong electron-withdrawing unit ester substituted thieno[3,4-b]thiophene (TT-E), and highly planar dithiazole linked TT-E (DTzTT) were constructed to realize the regulation of molecular aggregation and simplification of device fabrication. The results showed that as the relative proportion of TT-E segment in the backbone increased, the absorption evidently red-shifted with a gradually decreased aggregation in solution, eventually leading to the active layers that can be fabricated at low temperature. Furthermore, due to the excellent phase separation and low recombination, the optimized solar cells based on the terpolymer P1 containing 30% of TT-E segment exhibit high power conversion efficiency (PCE) of 9.09% with a significantly enhanced fill factor up to 72.86%. Encouragingly, the photovoltaic performance is insensitive to the fabrication temperature of the active layer, and it still could maintain high PCE of 8.82%, even at room temperature. This work not only develops the highly efficient photovoltaic materials for low temperature processed PSCs through ternary copolymerization strategy but also preliminarily constructs the relationship between aggregation and photovoltaic performance.
文章类型Article
关键词Polymer Solar Cells Ternary Copolymerization Random Terpolymer Temperature-dependent Aggregation Low-temperature Fabrication
WOS标题词Science & Technology ; Technology
DOI10.1021/acsami.7b09565
关键词[WOS]DIKETOPYRROLOPYRROLE-BASED TERPOLYMERS ; POWER CONVERSION EFFICIENCY ; CONJUGATED POLYMERS ; PHOTOVOLTAIC POLYMERS ; HOLE MOBILITY ; BAND-GAP ; ORGANIC PHOTOVOLTAICS ; CHARGE SEPARATION ; PERFORMANCE ; ACCEPTOR
收录类别SCI
语种英语
WOS研究方向Science & Technology - Other Topics ; Materials Science
项目资助者National Natural Science Foundation of China(21604092 ; China Postdoctoral Science Foundation(2017M610453) ; Shandong Provincial Natural Science Foundation(ZR2016BB33) ; Science and Technology Innovation Talents of Harbin(2013RFXXJ004) ; 51573205)
WOS类目Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号WOS:000411771400097
引用统计
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/9747
专题先进有机功能材料研究组
作者单位1.Harbin Univ Sci & Technol, Coll Mat Sci & Engn, Harbin 150080, Heilongjiang, Peoples R China
2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China
3.Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266042, Peoples R China
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Wang, Qian,Wang, Yingying,Zheng, Wei,et al. Regulating Molecular Aggregations of Polymers via Ternary Copolymerization Strategy for Efficient Solar Cells[J]. ACS APPLIED MATERIALS & INTERFACES,2017,9(37):32126-32134.
APA Wang, Qian.,Wang, Yingying.,Zheng, Wei.,Shahid, Bilal.,Qiu, Meng.,...&Yang, Renqiang.(2017).Regulating Molecular Aggregations of Polymers via Ternary Copolymerization Strategy for Efficient Solar Cells.ACS APPLIED MATERIALS & INTERFACES,9(37),32126-32134.
MLA Wang, Qian,et al."Regulating Molecular Aggregations of Polymers via Ternary Copolymerization Strategy for Efficient Solar Cells".ACS APPLIED MATERIALS & INTERFACES 9.37(2017):32126-32134.
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