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Synthesis and chara...
Synthesis and characterization of three small band gap conjugated polymers for solar cell applications
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- Hellström, Stefan, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers
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- Lindgren, Lars Johan, 1977 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers
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- Zhou, Yi (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Zhang, Fengling (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan
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- Inganäs, Olle (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan
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- Andersson, Mats, 1966 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers
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(creator_code:org_t)
- Royal Society of Chemistry (RSC), 2010
- 2010
- English.
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In: Polymer Chemistry. - : Royal Society of Chemistry (RSC). - 1759-9954 .- 1759-9962. ; 1:8, s. 1272-1280
- Related links:
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http://dx.doi.org/10...
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Abstract
Subject headings
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- We report on a new series of small band gap conjugated polymers utilizing donor-acceptor-donor substructures in the polymer backbone to broaden and extend the optical absorption to longer wavelengths. Three polymers were prepared by Suzuki polymerization, using the same donor-acceptor-donor segment but with different comonomers. The goal was to investigate how the optical and electronic properties of the polymers were influenced by the different comonomers. Electrochemical spectroscopy, using square-wave voltammetry, shows that increasing the electron-donating strength of the comonomer will raise the HOMO energy level of the polymer, resulting in a decreased band gap. This result is also manifested by comparing open-circuit voltages from the corresponding laboratory fabricated solar cells. The best performing photovoltaic cell, based on APFO-Green15/[60]PCBM (1 : 4 w/w), reached a J(sc) of 4.2 mA cm(-2), a V-oc of 0.73 V, and a FF of 0.54, giving a PCE of 1.7%.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- charge
- energy-transfer processes
- photoluminescence
- heterojunction
- devices
- donor
- photovoltaic cells
- alternating polyfluorene copolymers
- dissociation
- fluorene
- TECHNOLOGY
Publication and Content Type
- art (subject category)
- ref (subject category)
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