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RANDOM POLYFLUORENE CO-POLYMERS DESIGNED FOR A BETTER OPTICAL ABSORPTION COVERAGE OF THE VISIBLE REGION OF THE ELECTROMAGNETIC SPECTRUM
Chalmers, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, The Institute of Technology.
Chalmers, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, The Institute of Technology.
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2014 (English)In: Bulletin of the Chemical Society of Ethiopia, ISSN 1011-3924, E-ISSN 1726-801X, Vol. 28, no 1, 121-130 p.Article in journal (Refereed) Published
Abstract [en]

Two alternating polyfluorenes (APFO15-F8BT and APFO3-F8BT) with full absorption of the visible region of the electromagnetic radiation were designed and synthesized for bulk-heterojunction solar cell devices. The optical and electrochemical properties of the two polymers were studied. The two polymers exhibited strong absorption in the visible region with no significant valley over the visible region extending up to 650 nm. Deep HOMO and ideally situated LUMO energy levels were the characteristics of the two polymers as revealed from the square wave voltammogram study: desired properties for extracting high open circuit voltage and for a facile charge transfer to the acceptor component in devices to take place, respectively. Photovoltaic devices were fabricated by blending the two polymers with PCBM[70] and up to similar to 2% power conversion efficiency were obtained.

Place, publisher, year, edition, pages
Chemical Society of Ethiopia , 2014. Vol. 28, no 1, 121-130 p.
Keyword [en]
Polyfluorenes; Bulk-heterojunction solar cells; Optical absorption; HOMO and LUMO
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-111761DOI: 10.4314/bcse.v28i1.14ISI: 000342536400014OAI: oai:DiVA.org:liu-111761DiVA: diva2:759763
Note

Funding Agencies|International Science Programme (ISP), Uppsala University, Sweden

Available from: 2014-10-31 Created: 2014-10-31 Last updated: 2017-12-05

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Ma, ZaifeiZhang, Fengling

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