| 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 | |
| Source Publication | ACS APPLIED MATERIALS & INTERFACES
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| Volume | 9Issue:37Pages:32126-32134 |
| Abstract | 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. |
| Subtype | Article |
| Keyword | Polymer Solar Cells Ternary Copolymerization Random Terpolymer Temperature-dependent Aggregation Low-temperature Fabrication |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1021/acsami.7b09565 |
| WOS Keyword | DIKETOPYRROLOPYRROLE-BASED TERPOLYMERS ; POWER CONVERSION EFFICIENCY ; CONJUGATED POLYMERS ; PHOTOVOLTAIC POLYMERS ; HOLE MOBILITY ; BAND-GAP ; ORGANIC PHOTOVOLTAICS ; CHARGE SEPARATION ; PERFORMANCE ; ACCEPTOR |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science |
| Funding Organization | 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 Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000411771400097 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qibebt.ac.cn/handle/337004/9747 |
| Collection | 先进有机功能材料研究组 |
| Affiliation | 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 |
| Recommended Citation 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. |
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