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Mixed solvents for reproducible photovoltaic bulk heterojunctions
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, The Institute of Technology.
Chalmers University of Technology, Göteborg, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. 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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2011 (English)In: Journal of Photonics for Energy, ISSN 1947-7988, Vol. 1, no 1Article in journal (Refereed) Published
Abstract [en]

Most efficient polymer solar cells are usually fabricated from toxic organic solvents, such as chloroform, chlorobenzene, or dichlorobenzene (ODCB). Here, we demonstrate a power conversion efficiency of 4.5% in solar cells with a new blue polymer poly[2,3-bis-(3-octyloxyphenyl)quinoxaline-5,8-diyl-alt- thiophene-2,5-diyl] (TQ1) mixed with PC71BM and processed from mixed solvents of toluene and ODCB in a ratio of 9:1. Decreasing the content of ODCB makes device processing more compatible with the environment for large scale production, with 10% reduction of photocurrent compared to devices from pure ODCB under optimized conditions. In addition, less variation of photocurrent is obtained in solar cells processed from mixed solvents than from pure ODCB due to varying nanostructure in the blends, which is also critical for production. © 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

Place, publisher, year, edition, pages
Society of Photo-optical Instrumentation Engineers (SPIE) , 2011. Vol. 1, no 1
Keyword [en]
Bulk heterojunction; Mixed solvents; Organic solar cells; TQ1
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-87435DOI: 10.1117/1.3606393OAI: oai:DiVA.org:liu-87435DiVA: diva2:602232
Available from: 2013-01-31 Created: 2013-01-17 Last updated: 2013-02-18

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Wang, ZhongqiangHou, LintaoZhang, FenglingInganäs, Olle

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