Surprising Effects upon Inserting Benzene Units into a Quaterthiophene-Based D-A Polymer-Improving Non-Fullerene Organic Solar Cells via Donor Polymer Design

被引：116

作者：

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

Yao, Huatong ^{[1
,2
,3
]}

Li, Zhengke ^{[1
,2
,3
]}

Awartani, Omar M. ^{[4
,5
]}

Liu, Yuhang ^{[1
,2
]}

Wang, Zheng ^{[1
,2
]}

Yang, Guofang ^{[1
,2
]}

Zhang, Jianquan ^{[1
,2
]}

Ade, Harald ^{[4
,5
]}

Yan, He ^{[1
,2
,3
,6
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Chem, Chinese Natl Engn Res Ctr Tissue Restorat & Recon, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Univ Sci & Technol, Hong Kong Branch, Chinese Natl Engn Res Ctr Tissue Restorat & Recon, Kowloon, Hong Kong, Peoples R China

[3] Hong Kong Univ Sci & Technology, Shenzhen Res Inst, 9 Yuexing 1st RD,Hitech Pk, Shenzhen 518057, Peoples R China

[4] North Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

[5] North Carolina State Univ, Organ & Carbon Elect Lab, Raleigh, NC 27695 USA

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

来源：

ADVANCED ENERGY MATERIALS | 2017年 / 7卷 / 12期

关键词：

alkyl chain interdigitation; donor polymer design; organic solar cells; small-molecular acceptor; SMALL-MOLECULE ACCEPTOR; HIGH-EFFICIENCY; ELECTRON-ACCEPTOR; PHOTOVOLTAIC CELLS; PERFORMANCE; NETWORK; AGGREGATION; MORPHOLOGY; CHAINS;

D O I：

10.1002/aenm.201602304

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Contrary to the common expectation that the introduction of the benzene ring should reduce organic photovoltaics performance, the PffBT4T-B polymer used, yielded a dramatically enhanced performance. Systematic morphological and electronic characterizations were conducted and revelaed that talthough PffBT4T-B exhibits weaker Π-Π stacking and lower crystallinity than PffBt4T, the alkyl chains of the PffBT4T-B polymer form a much tighter extent of interdigitation, which can effcetively expel the ITIC-Th molecules from the polymer domain and thus form more crystalline and pure ITIC-Th domain.

引用

页数：6

共 61 条

[1] Non-Fullerene Polymer Solar Cells Based on Alkylthio and Fluorine Substituted 2D-Conjugated Polymers Reach 9.5% Efficiency [J].