Indacenodithiophene-co-benzothiadiazole Copolymers for High Performance Solar Cells or Transistors via Alkyl Chain Optimization

被引：171

作者：

Bronstein, Hugo ^{[1
]}

Leem, Dong Seok ^{[1
]}

Hamilton, Richard ^{[2
]}

Woebkenberg, Paul ^{[1
]}

King, Simon ^{[1
]}

Zhang, Weimin ^{[1
]}

Ashraf, Raja Shahid ^{[1
]}

Heeney, Martin ^{[1
]}

Anthopoulos, Thomas D. ^{[1
]}

de Mello, John ^{[1
]}

McCulloch, Iain ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem, Ctr Plast Elect, London SW7 2AZ, England

[2] Solar Press, London NW1 0NH, England

来源：

MACROMOLECULES | 2011年 / 44卷 / 17期

关键词：

SIDE-CHAINS; PHOTOVOLTAIC PROPERTIES; MORPHOLOGY; POLYMERS;

D O I：

10.1021/ma201158d

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A study was conducted to prepare indacenodithiophene-co-benzothiadiazole copolymers ((IDT-BT) for high performance solar cells or transistors via alkyl chain optimization. The synthesis and high hole mobility of an IDT-BT copolymer with hexadecyl alkyl chains was demonstrated. The long linear alkyl chains were attributed to impart some degree of crystallinity in thin film. The high performance of a similar IDT-BT copolymer bearing phenylhexyl side chains in solar cell devices was also investigated. Replacement of benzothiadiazole on this system with alternative acceptors yielded efficient solar cells. Solar cells with device structure ITO/PEDOT:PSS/polymer P4:PC71BM/Ca/Al were fabricated and their averaged properties were shown. AFM images of the devices were also recorded to probe the underlying cause of this significant variation in device performance.

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页码：6649 / 6652

页数：4

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