Chlorinated polymer solar cells simultaneously enhanced by fullerene and non-fullerene ternary strategies

Longzhu Liu; Pengjie Chao; Daize Mo; Feng He

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Chlorinated polymer solar cells simultaneously enhanced by fullerene and non-fullerene ternary strategies

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To achieve efficient polymer solar cells(PSCs)with full utilization of the whole spectrum,the multicomponent devices are of great importance to be deeply explored,especially for their capability of one-step fabrication.However,the research about one same binary system simultaneously derivated various multi-component PSC is still very limited.Herein,we achieved the whole constructions from one binary host to different ternary systems and even the quaternary one.The ternary strategies with fullerene acceptor,PC_(71)BM,and non-fullerene acceptor,BT_(6)IC-BO-4Cl,as the third component,both boosted the device efficiencies of PBT4Cl-Bz:IT-4F binary system from about 9% to comparatively beyond 11%.Despite the comparable improvement of performance,there existed other similarities and differences in two ternary strategies.In detail,the isotropic carrier transport of PC_(71)BM which largely elevated the fill factor(FF)in the corresponding devices,while the strong absorption of BT_(6)IC-BO-4Cl enhanced the short current density(J_(SC))most.More interestingly,quaternary devices based on PBT4Cl-Bz:IT-4F:PC71 BM:BT_(6)IC-BO-4Cl could combine both advantages of fullerene and non-fullerene ternary strategies,further pumped the J_(SC) from 16.44 to the highest level of 19.66 mA cm^(-2) among all devices,eventually resulted in an optimized efficiency of 11.69%.It reveals that both fullerene and non-fullerene ternary strategies have their unique feature to elevate the device performance either by efficient isotropic carrier transport or better coverage of whole sunlight spectrum and easy tunable energy levels from organic materials.The key is how to integrate the two pathways in one system and provide a more competitive solution facing high-quality PSCs.

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《能源化学：英文版》 |2021年第3期|P.620-625|共6页
作者
Longzhu Liu; Pengjie Chao; Daize Mo; Feng He;
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作者单位

School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 Heilongjiang ChinaShenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 Guangdong China;

Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 Guangdong China;

Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 Guangdong China;

Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 Guangdong ChinaGuangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 Guangdong China;

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原文格式 PDF
正文语种 chi
中图分类有机化学;
关键词
Chlorination; Polymer solar cell; Multi-component; Fullerene; Non-fullerene;

机译：氯化;聚合物太阳能电池;多组分;富勒烯;非富勒烯;

Chlorinated polymer solar cells simultaneously enhanced by fullerene and non-fullerene ternary strategies

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