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Search: id:"swepub:oai:research.chalmers.se:84ad41dc-563d-4513-8c50-007f91ffe2e8" > New quinoxaline and...

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New quinoxaline and pyridopyrazine-based polymers for solution-processable photovoltaics

Kroon, Renee, 1982 (author)
Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden
Gehlhaar, R. (author)
Interuniversity Micro-Electronics Center at Leuven,IMEC VZW, Belgium
Steckler, Timothy, 1979 (author)
Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden
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Henriksson, Patrik, 1983 (author)
Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden
Müller, Christian, 1980 (author)
Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden
Bergqvist, Jonas (author)
Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan
Hadipour, A. (author)
Interuniversity Micro-Electronics Center at Leuven,IMEC VZW, Belgium
Heremans, P. (author)
Interuniversity Micro-Electronics Center at Leuven,IMEC VZW, Belgium
Andersson, Mats, 1966 (author)
Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden
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 (creator_code:org_t)
Elsevier BV, 2012
2012
English.
In: Solar Energy Materials and Solar Cells. - : Elsevier BV. - 0927-0248 .- 1879-3398. ; 105, s. 280-286
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The recently published quinoxaline/thiophene-based polymer TQ1 has been modified on its acceptor unit, either altering the acceptor strength by incorporating a pyridopyrazine, substitution of the acceptor-hydrogens by fluorine, or substitution of the alkoxy side chain by alkyl. The changes in physical, electronic and device properties are discussed. For the polymers incorporating the stronger acceptors a decreased performance is found, where in both cases the current in the devices is compromised. Incorporation of the pyridopyrazine-based acceptor seems to result in more severe or additional loss mechanisms compared to the polymer that incorporates the fluorine atoms. A similar performing material is obtained when changing the alkoxy side chain in TQ1 to an alkyl, where the solar cell performance is mainly improved on the fill factor. It is demonstrated that the standard TQ1 structure is easily modified in a number of ways, showing the versatility and robustness of the standard TQ1 structure and synthesis.

Subject headings

NATURVETENSKAP  -- Kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

Keyword

performance
Conjugated polymers
Organic electronics
bandgap polymers
charge-transfer states
photogeneration
open-circuit
films
Photovoltaic devices
Solar cells
blends
voltage
Polymeric materials
molecular-weight
heterojunction solar-cells
fullerene
TECHNOLOGY

Publication and Content Type

art (subject category)
ref (subject category)

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