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An alternating copo...
An alternating copolymer of fluorene donor and quinoxaline acceptor versus a terpolymer consisting of fluorene, quinoxaline and benzothiadiazole building units: synthesis and characterization
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- Gedefaw, Desta Antenehe, 1971 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden; University of S Australia, Australia
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- Zaifei, Zaifei (författare)
- Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska fakulteten
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- Mulugeta, E. (författare)
- Addis Ababa University,University of Addis Ababa, Ethiopia
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- Zhao, Y. (författare)
- Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska fakulteten
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- Zhang, Fengling (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Andersson, Mats, 1966 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden; University of S Australia, Australia
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- Mammo, W. (författare)
- Addis Ababa University,University of Addis Ababa, Ethiopia
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(creator_code:org_t)
- 2015-10-29
- 2016
- Engelska.
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Ingår i: Polymer Bulletin. - : Springer Science and Business Media LLC. - 0170-0839 .- 1436-2449. ; 73:4, s. 1167-1183
- Relaterad länk:
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http://dx.doi.org/10...
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https://unisa.alma.e...
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https://research.cha...
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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
- An alternating polyfluorene copolymer based on fluorene donor and quinoxaline acceptor (P1) and an alternating terpolymer (P2) with fluorene (50 %) donor and quinoxaline (25 %) and benzothiadiazole (25 %) acceptor units were designed and synthesized for use as photoactive materials in solar cells. The presence of benzothiadiazole unit in P2 increased the optical absorption coverage in the range of 350-600 nm, which is an interesting property and a big potential for achieving improved photovoltaic performances with judicious optimization of the devices. Solar cells were fabricated from 1:4 blends of polymers-PCBM[70] using o-dichlorobenzene (o-DCB) as processing solvent, and P1 showed a power conversion efficiency (PCE) of 3.18 %, with a short-circuit current density (J (SC)) of 7.78 mA/cm(2), an open-circuit voltage (V (OC)) of 0.82 V, and a fill factor (FF) of 50 % while P2 showed an overall PCE of 2.14 % with corresponding J (SC) of 5.97 mA/cm(2), V (OC) of 0.84 V and FF of 42 %. In general, P2 gave lower J (SC) and FF presumably due to the fine domain sizes of the polymer-PCBM[70] blend as seen from the atomic force microscopy (AFM) image which might have affected the charge carrier transport. Alternating (P1) and ternary (P2) conjugated polymers were designed, synthesized and used for fabrication of photovoltaic devices.
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Nyckelord
- Polyfluorenes
- Quinoxaline
- Fluorene
- Suzuki coupling reaction
- Benzothiadiazole
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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