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Exciton Dynamics in Alternating Polyfluorene/Fullerene Blends

De, Swati (author)
Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Kemisk Fysik, Kemicentrum, Lunds Universitet, Lund, Sweden
Kesti, Tero (author)
Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Kemisk Fysik, Kemicentrum, Lunds Universitet, Lund, Sweden
Maiti, Manisankar (author)
Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Kemisk Fysik, Kemicentrum, Lunds Universitet, Lund, Sweden
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Zhang, Fengling, 1960- (author)
Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan
Inganäs, Olle, 1951- (author)
Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan
Yartsev, Arkady (author)
Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Kemisk Fysik, Kemicentrum, Lunds Universitet, Lund, Sweden
Pascher, Torbjörn (author)
Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Kemisk Fysik, Kemicentrum, Lunds Universitet, Lund, Sweden
Sundström, Villy (author)
Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Kemisk Fysik, Kemicentrum, Lunds Universitet, Lund, Sweden
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 (creator_code:org_t)
College Park, MD, United States : American Institute of Physics (AIP), 2008
2008
English.
In: Journal of Chemical Physics. - College Park, MD, United States : American Institute of Physics (AIP). - 0021-9606 .- 1089-7690. ; 350:1-3, s. 14-22
Related links:
http://dx.doi.org/10...
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https://urn.kb.se/re...
https://doi.org/10.1...
https://lup.lub.lu.s...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Exciton dynamics in alternating copolymer/fullerene solar cell blends have been investigated using femtosecond transient absorption spectroscopy. The acceptor concentrations have been varied over a wide range. Experimental data, kinetic modeling and simulations, all indicate that the efficiency of exciton conversion to charges is 100% even at acceptor concentrations as low as 20 wt%. The reported dependence of solar cell efficiency on fullerene concentration may thus arise from other factors. However, there exists an acceptor concentration threshold (5 wt%) below which a substantial fraction of the excitations remain unquenched. The results, we believe are very relevant to optimization of performance efficiency by clever manipulation of morphology. We have also observed exciton–exciton energy transfer in these blends at low acceptor concentrations.

Subject headings

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

Keyword

Exciton dynamics; Polyfluorene/fullerene blends
NATURAL SCIENCES
NATURVETENSKAP
exciton dynamics
polyfluorene/fullerene blends

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art (subject category)

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