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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
基金:
欧盟地平线“2020”;
英国工程与自然科学研究理事会;
中国国家自然科学基金;
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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