Alternative Thieno[3,2-b][1]benzothiophene Isoindigo Polymers for Solar Cell Applications

被引：9
|
作者：
Neophytou, Marios [1 ]
Bryant, Daniel [1 ]
Lopatin, Sergei [2 ]
Chen, Hu [1 ]
Hallani, Rawad K. [1 ]
Cater, Lewis [1 ]
McCulloch, Iain [1 ,3 ,4 ]
Yue, Wan [3 ,4 ,5 ]
机构：
[1] KAUST, KSC, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia
[2] KAUST, Imaging & Characterizat Core Lab, Thuwal 239556900, Saudi Arabia
[3] Imperial Coll London, Dept Chem, London SW7 2AZ, England
[4] Imperial Coll London, Ctr Plast Elect, London SW7 2AZ, England
[5] Sun Yat Sen Univ, Key Lab Polymer Composite & Funct Mat, Minist Educ, Sch Mat Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2018年 / 39卷 / 14期
基金：
欧盟地平线“2020”; 中国国家自然科学基金; 英国工程与自然科学研究理事会;
关键词：
conjugated polymers; EELS mapping; solar cells; thieno-benzothiophene isoindigo; FIELD-EFFECT TRANSISTORS; CONJUGATED POLYMERS; OPTIMIZATION; EFFICIENCY; COPOLYMER; MOBILITY;
D O I：
10.1002/marc.201700820
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
This work reports the synthesis, characterization, photophysical, and photovoltaic properties of five new thieno[3,2-b][1]benzothiophene isoindigo (TBTI)-containing low bandgap donor-acceptor conjugated polymers with a series of comonomers and different side chains. When TBTI is combined with different electron-rich moieties, even small structural variations can have significant impact on thin film morphology of the polymer:phenyl C70 butyric acid methyl ester (PCBM) blends. More importantly, high-resolution electron energy loss spectroscopy is used to investigate the phase-separated bulk heterojunction domains, which can be accurately and precisely resolved, enabling an enhanced correlation between polymer chemical structure, photovoltaic device performance, and morphology.
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页数：7
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