17.1 %-Efficient Eco-Compatible Organic Solar Cells from a Dissymmetric 3D Network Acceptor

被引：170

作者：

Chen, Hui ^{[1
,2
,3
]}

Lai, Hanjian ^{[1
,2
,4
]}

Chen, Ziyi ^{[1
,2
]}

Zhu, Yulin ^{[1
,2
]}

Wang, Huan ^{[1
,2
]}

Han, Liang ^{[1
,2
]}

Zhang, Yuanzhu ^{[1
,2
]}

He, Feng ^{[1
,2
,5
]}

机构：

[1] Univ Sci & Technol, Shenzhen Grubbs Inst, Shenzhen 518055, Peoples R China

[2] Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China

[3] Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China

[4] Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Peoples R China

[5] Southern Univ Sci & Technol, Guangdong Prov Key Lab Catalysis, Shenzhen 518055, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2021年 / 60卷 / 06期

基金：

中国国家自然科学基金;

关键词：

3D networks; chlorination; eco-compatible; non-fullerene acceptors; organic solar cells; NONFULLERENE ACCEPTORS; POLYMER; PERFORMANCE; FULLERENE; PHOTOVOLTAICS; GAP;

D O I：

10.1002/anie.202013053

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To elevate the performance of polymer solar cells (PSC) processed by non-halogenated solvents, a dissymmetric fused-ring acceptor BTIC-2Cl-gamma CF3 with chlorine and trifluoromethyl end groups has been designed and synthesized. X-ray crystallographic data suggests that BTIC-2Cl-gamma CF3 has a 3D network packing structure as a result of H- and J-aggregations between adjacent molecules, which will strengthen its charge transport as an acceptor material. When PBDB-TF was used as a donor, the toluene-processed binary device realized a high power conversion efficiency (PCE) of 16.31 %, which improved to 17.12 % when PC71ThBM was added as the third component. Its efficiency of over 17 % is currently the highest among polymer solar cells processed by non-halogenated solvents. Compared to its symmetric counterparts BTIC-4Cl and BTIC-CF3-gamma, the dissymmetric BTIC-2Cl-gamma CF3 integrates their merits, and has optimized the molecular aggregations with excellent storage and photo-stability, and also extending the maximum absorption peak in film to 852 nm. The devices exhibit good transparency indicating a potential utilization in semi-transparent building integrated photovoltaics (ST-BIPV).

引用

页码：3238 / 3246

页数：9

共 51 条

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