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Highly Efficient Non-Fullerene Organic Solar Cells Using 4,8-Bis((2-ethylhexyl)oxy)benzo[1,2-b:4,b ']dithiophene-Based Polymers as Additives
Lei, Tao; Peng, Ruixiang; Fan, Xi; Wei, Qiang; Liu, Zhiyang; Guan, Qian; Song, Wei; Hong, Ling; Huang, Jiaming; Yang, Rongjuan; Ge, Ziyi
2018
发表期刊MACROMOLECULES
卷号51期号:11页码:4032-4039
摘要Electron acceptor units play an important role in the design of donor-acceptor (D-A) type polymers for efficient organic solar cells (OSCs). In this report, with the oxidation of the thiophene moiety, the electron-rich 4,8-bis((2-ethylhexyl)oxy)benzo[1,2-b:4,5-b']dithiophene (BDT) unit was tuned into electron-deficient 4,8-bis((2-ethylhexyl)oxy)benzo[1,2-b:4,5-b']dithiophene 1,1,5,5-tetraoxide (BDTO) unit. Two novel polymers of PBDTO and PBDTO-T based on BDTO unit were synthesized and employed as additives in efficient non-fullerene OSCs with the active layer consist of PBDB-T and IT-M. With doping 1% PBDTO or PBDTO-T, the power conversion efficiency (PCE) of the prepared OSCs increased from 10.31% to 11.47% or 11.12%, respectively. These two polymers can afford cascaded energy levels and smooth the surface of the active layer, which are beneficial for better carrier transportation and separation. Our results open a new avenue to construct electron acceptor backbone in the design of D-A type polymers for OSCs.
关键词Electron-acceptor Conversion Efficiency Perylene Diimides Design Pdi
学科领域Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/17399
专题2018专题
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GB/T 7714
Lei, Tao,Peng, Ruixiang,Fan, Xi,et al. Highly Efficient Non-Fullerene Organic Solar Cells Using 4,8-Bis((2-ethylhexyl)oxy)benzo[1,2-b:4,b ']dithiophene-Based Polymers as Additives[J]. MACROMOLECULES,2018,51(11):4032-4039.
APA Lei, Tao.,Peng, Ruixiang.,Fan, Xi.,Wei, Qiang.,Liu, Zhiyang.,...&Ge, Ziyi.(2018).Highly Efficient Non-Fullerene Organic Solar Cells Using 4,8-Bis((2-ethylhexyl)oxy)benzo[1,2-b:4,b ']dithiophene-Based Polymers as Additives.MACROMOLECULES,51(11),4032-4039.
MLA Lei, Tao,et al."Highly Efficient Non-Fullerene Organic Solar Cells Using 4,8-Bis((2-ethylhexyl)oxy)benzo[1,2-b:4,b ']dithiophene-Based Polymers as Additives".MACROMOLECULES 51.11(2018):4032-4039.
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