Carbazole-based polymers for organic photovoltaic devices
Li, Jiaoli2; Grimsdale, Andrew C.1
AbstractPolymers based upon 2,7-disubstituted carbazole have recently become of great interest as electron-donating materials in organic photovoltaic devices. In this tutorial review the synthesis of such polymers and their relative performances in such devices are surveyed. In particular structure-property relationships are investigated and the potential for the rational design of materials for high efficiency solar cells is discussed. In the case of the 2,7-carbazole homopolymer it has been found that electron acceptors other than fullerenes produce higher energy conversion efficiencies. To get around possible problems with the build-up of charge density at the 3- and 6-positions and to improve the solar light harvesting ability of the polymers by reducing the bandgap, ladder-and step-ladder type 2,7-carbazole polymers have been synthesised. The fully ladderised polymers gave very poor results in devices, but efficiencies of over 1% have been obtained from a step-ladder polymer with a diindenocarbazole monomer unit. Donor-acceptor copolymers containing 2,7-carbazole donors and various electron-accepting comonomer units have been prepared. An efficiency of 6% has been reported from a device using such a copolymer and by suitable choice of the acceptor comonomer, polymers can be designed with potential theoretical power conversion efficiencies of 10%. While such efficiencies remain to be obtained, the results to date certainly suggest that carbazole-based polymers and copolymers are among the most promising materials yet proposed for obtaining high efficiency organic solar cells.
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WOS IDWOS:000279046000006
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Cited Times:253[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorGrimsdale, Andrew C.
Affiliation1.Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore
2.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China
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Li, Jiaoli,Grimsdale, Andrew C.. Carbazole-based polymers for organic photovoltaic devices[J]. CHEMICAL SOCIETY REVIEWS,2010,39(7):2399-2410.
APA Li, Jiaoli,&Grimsdale, Andrew C..(2010).Carbazole-based polymers for organic photovoltaic devices.CHEMICAL SOCIETY REVIEWS,39(7),2399-2410.
MLA Li, Jiaoli,et al."Carbazole-based polymers for organic photovoltaic devices".CHEMICAL SOCIETY REVIEWS 39.7(2010):2399-2410.
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