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Influence of solven...
Influence of solvent mixing on the morphology and performance of solar cells based on polyfluorene copolymer/fullerene blends
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- Zhang, Fengling (författare)
- Linköpings universitet,Tekniska högskolan,Biomolekylär och Organisk Elektronik
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- Jespersen, Kim (författare)
- 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,Department of Chemical Physics, Lund University, Kemicentrum, SE-22100 Lund, Sweden
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- Bjoerstroem, Cecilia (författare)
- Björström, C., Department of Physics, Karlstad University, SE-65188 Karlstad, Sweden
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- Svensson, Mattias, 1982 (författare)
- Department of Organic Chemistry and Polymer Technology, Chalmers University of Technology, SE-41296 Göteborg, Sweden
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- Andersson, Mats, 1966 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Department of Organic Chemistry and Polymer Technology, Chalmers University of Technology, SE-41296 Göteborg, Sweden
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- Sundström, Villy (författare)
- 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,Sundström, V., Department of Chemical Physics, Lund University, Kemicentrum, SE-22100 Lund, Sweden
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- Magnusson, Kjell (författare)
- Department of Physics, Karlstad University, SE-65188 Karlstad, Sweden
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- Moons, Ellen (författare)
- Department of Physics, Karlstad University, SE-65188 Karlstad, Sweden
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- Yartsev, Arkady (författare)
- 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,Department of Chemical Physics, Lund University, Kemicentrum, SE-22100 Lund, Sweden
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- Inganäs, Olle (författare)
- Linköpings universitet,Tekniska högskolan,Biomolekylär och Organisk Elektronik
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(creator_code:org_t)
- Wiley, 2006
- 2006
- Engelska.
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Ingår i: Advanced Functional Materials. - : Wiley. - 1616-3028 .- 1616-301X. ; 16:5, s. 667-674
- Relaterad länk:
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http://dx.doi.org/10...
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https://research.cha...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The influence of the solvent on the morphol. and performance of polymer solar cells was studied in devices based on blends of the polyfluorene copolymer, poly(2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2', 1',3'-benzothiadiazole)), and [6,6]-phenyl-C61-butyric acid Me ester. The blends are spin-coated from CHCl3 or from CHCl3 mixed with small amts. of xylene, toluene, or chlorobenzene. The devices are characterized under monochromatic light and AM1.5 solar illumination. An enhancement of the photocurrent d. was obsd. in diodes made from CHCl3 mixed with chlorobenzene, and a decreased photocurrent d. is obsd. in diodes made from CHCl3 mixed with xylene or toluene, compared to diodes made from neat CHCl3. The open-circuit voltages are almost the same for all diodes. The surfaces of the active layers were imaged with AFM. Height images indicate that a finer and more uniform distribution of domains corresponds to the diodes with enhanced photocurrent that are made from CHCl3 mixed with chlorobenzene, while a structure with larger domains is assocd. with the lower photocurrents in the diodes made from CHCl3 mixed with xylene or toluene. The influence of the morphol. on the excited-state dynamics and charge generation was studied using time-resolved spectroscopy. Fast formation of bound charge pairs followed by their conversion into free charge carriers was resolved, and excitation-intensity-dependent non-geminate recombination of free charges was obsd. A significant enhancement in free-charge-carrier generation was obsd. on introducing chlorobenzene into CHCl3. Imaging photocurrent generation from the solar cells with a light-pulse technique shows an inhomogeneous photocurrent distribution, which is related to the undulations in the thickness of the active layer. Thicker parts of the diodes yield higher photocurrent values. [on SciFinder (R)]
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- Microstructure
- Solvent effect (influence of solvent on morphol. and performance of solar cells based on polyfluorene copolymer/fullerene blends)
- solar cell polyfluorene fullerene blend morphol solvent effect
- Solar cells
- TECHNOLOGY
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Zhang, Fengling
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Jespersen, Kim
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Bjoerstroem, Cec ...
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Svensson, Mattia ...
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Andersson, Mats, ...
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Sundström, Villy
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Magnusson, Kjell
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Moons, Ellen
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Yartsev, Arkady
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Inganäs, Olle
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