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Tailoring side chains of low band gap polymers for high efficiency polymer solar cells
Chinese Academy of Science.
Beijing Normal University.
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, The Institute of Technology.
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2010 (English)In: Polymer, ISSN 0032-3861, E-ISSN 1873-2291, Vol. 51, no 14, 3031-3038 p.Article in journal (Refereed) Published
Abstract [en]

High efficiency organic solar cells (OSCs) require conjugated polymers with a low band gap, broad absorption in visible and IR region, high carrier mobility, and relatively high molecular weight as p-type donor materials. Flexible side chains on the rigid polymer backbone are crucial for the solubility of conjugated polymers. In this work, four polymers with the main chain structure of fluorene-thiophene-benzothiadiazole-thiophene and flexible side chains located on fluorene, thiophene, and benzothiadiazole moiety, respectively, have been synthesized by Suzuki-Miyaura-Schluter polycondensation. Photovoltaic device measurements with a device configuration of ITO/polymer:PC71BM blends/LiF/Al show that P1 carrying octyloxy chains on benzothiadiazole rings gives the best performance, with a power conversion efficiency of 3.1%.

Place, publisher, year, edition, pages
Elsevier Science B.V., Amsterdam. , 2010. Vol. 51, no 14, 3031-3038 p.
Keyword [en]
Organic solar cell; Side chains; Low band gap
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-58286DOI: 10.1016/j.polymer.2010.05.015ISI: 000279181400013OAI: oai:DiVA.org:liu-58286DiVA: diva2:337911
Available from: 2010-08-10 Created: 2010-08-09 Last updated: 2017-12-12

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Zhou, YiAndersson, MattiasLi, FenghongZhang, Fengling

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Department of Physics, Chemistry and BiologyThe Institute of TechnologyBiomolecular and Organic ElectronicsSurface Physics and Chemistry
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CiteExportLink to record
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  • apa
  • harvard1
  • ieee
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  • Other style
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  • de-DE
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