Siloxane-Terminated Side Chain Engineering of Acceptor Polymers Leading to Over 7% Power Conversion Efficiencies in All-Polymer Solar Cells

被引：50

作者：

Feng, Shizhen ^{[1
]}

Liu, Chang ^{[1
]}

Xu, Xiaofeng ^{[2
,3
]}

Liu, Xuncheng ^{[1
]}

Zhang, Lianjie ^{[1
]}

Nian, Yaowen ^{[1
]}

Cao, Yong ^{[1
]}

Chen, Junwu ^{[1
]}

机构：

[1] South China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

[2] Linkoping Univ, Biomol & Organ Elect, Dept Phys Chem & Biol IFM, SE-58183 Linkoping, Sweden

[3] Chalmers Univ Technol, Dept Chem & Chem Engn, SE-41296 Gothenburg, Sweden

来源：

ACS MACRO LETTERS | 2017年 / 6卷 / 11期

基金：

中国国家自然科学基金;

关键词：

PERFORMANCE; MORPHOLOGY; OPTIMIZATION; AGGREGATION; ORIENTATION; TRANSPORT; MOBILITY; SOLVENT; PACKING;

D O I：

10.1021/acsmacrolett.7b00738

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

To investigate the influence of functional pendent groups on acceptor polymers and photovoltaic properties of all-polymer solar cells (all-PSCs), two novel acceptor polymers containing siloxane-terminated side chains are synthesized and characterized. Increasing the content of siloxane-terminated side chains can reduce pi-pi stacking distance and improve crystalline behavior, yet lead to poorer solubility of the acceptor polymers. By modulating the proper loadings of siloxane-terminated side chains on the acceptor polymers, the PBDB-T:PNDI-Si25 all-PSC attains a maximal power conversion efficiency (PCE) of 7.4% with an outstanding fill factor of 0.68. The results provide, new insights for developing high-performance all-PSCs through functional group engineering on the acceptor polymers, to achieve good solubility, polymer miscibility, and blend morphology.

引用

页码：1310 / 1314

页数：5

共 32 条

[1] Material and Energy Intensity of Fullerene Production [J].