Regulating Molecular Aggregations of Polymers via Ternary Copolymerization Strategy for Efficient Solar Cells

doi:10.1021/acsami.7b09565

CORC > 青岛生物能源与过程研究所 > 中国科学院青岛生物能源与过程研究所 > 先进有机功能材料团队

	Regulating Molecular Aggregations of Polymers via Ternary Copolymerization Strategy for Efficient Solar Cells
	Wang, Qian 1; Wang, Yingying 2,3; Zheng, Wei 1; Shahid, Bilal 2; Qiu, Meng 2; Wang, Di 1; Zhu, Dangqiang 2; Yang, Renqiang 2
刊名	ACS APPLIED MATERIALS & INTERFACES
	2017-09-20
卷号	9 期号:37 页码:32126-32134
关键词	Polymer Solar Cells Ternary Copolymerization Random Terpolymer Temperature-dependent Aggregation Low-temperature Fabrication
DOI	10.1021/acsami.7b09565
文献子类	Article
英文摘要	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.
WOS关键词	DIKETOPYRROLOPYRROLE-BASED TERPOLYMERS ; POWER CONVERSION EFFICIENCY ; CONJUGATED POLYMERS ; PHOTOVOLTAIC POLYMERS ; HOLE MOBILITY ; BAND-GAP ; ORGANIC PHOTOVOLTAICS ; CHARGE SEPARATION ; PERFORMANCE ; ACCEPTOR
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
WOS记录号	WOS:000411771400097
资助机构	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)
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/9747]
专题	青岛生物能源与过程研究所_先进有机功能材料团队
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
推荐引用方式 GB/T 7714	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.