Conjugated polymers electron-accepting with tethered moieties as ambipolar materials for photovoltaics

被引:60
作者
Cravino, Antonio [1 ]
机构
[1] Univ Angers, CNRS, UMR 6200, CIMMA,Grp Linear Conjugated Syst, F-49045 Angers, France
关键词
organic photovoltaics; donor-acceptor phase separation; photoinduced chemical potential gradient; conjugated polymers; fullerenes; double-cable polymers; ambipolar semiconductors;
D O I
10.1002/pi.2244
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Conjugated polymers are of increasing interest as semiconductors for soft (opto) electronic devices, including photovoltaic elements. A promising conversion of solar energy into electrical energy is possible with blends of soluble electron donor-type conjugated polymers and fullerenes as electron-acceptor, transporting component. This approach, called bulk-heterojunction, suggested the preparation of intrinsic ambipolar materials to control simultaneously the electronic and morphological properties. On these bases, the covalent grafting of acceptor moieties onto conjugated backbones seemed attractive for the preparation of intrinsically ambipolar polymeric materials ('double-cable' polymers) as an alternative to donor-acceptor composites. The design, characterisation and application of this novel class of polymers are reviewed taking into account the current understanding of organic photovoltaics. (c) 2007 Society of Chemical Industry.
引用
收藏
页码:943 / 956
页数:14
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