title: Fluorene-based co-polymer with high hole mobility and device performance in bulk heterojunction organic solar cells.
abstract: A new donor-acceptor polymer based on 9,9-dioctylfluorene is synthesized and tested in organic photovoltaic devices. Results show that the polymer exhibits good solubility in a range of organic solvents and has a high hole mobility. When blended with a PC70 BM acceptor and fabricated into a bulk heterojunction, photovoltaic devices having a maximum power conversion efficiency (PCE) of 6.2% and a peak external quantum efficiency of 74% are created. Such efficiencies are realized without any necessity for solvent additives or thermal annealing protocols.
authors.affiliation: Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK.
authors.forename: Darren C
authors.initials: DC
authors.lastname: Watters
authors.forename: Hunan
authors.initials: H
authors.lastname: Yi
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Pearson
authors.forename: James
authors.initials: J
authors.lastname: Kingsley
authors.forename: Ahmed
authors.initials: A
authors.lastname: Iraqi
authors.forename: David
authors.initials: D
authors.lastname: Lidzey
mesh_terms: D055664:Electrochemical Techniques; D005449:Fluorenes / Q000737:chemistry*; D037741:Fullerenes / Q000737:chemistry*; D015394:Molecular Structure; D011108:Polymers / Q000138:chemical synthesis*; D012993:Solar Energy; D012995:Solubility; D013472:Sunlight
chemical_list: D005449:Fluorenes; D037741:Fullerenes; D011108:Polymers
keywords: conjugated polymers; fullerenes; high-performance polymers; thin films