9-Alkylidene-9H-Fluorene-Containing Polymer for High-Efficiency Polymer Solar CellsVisa övriga samt affilieringar
2011 (Engelska)Ingår i: Macromolecules, ISSN 0024-9297, E-ISSN 1520-5835, Vol. 44, nr 19, s. 7617-7624Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
A novel donor-acceptor copolymer containing 9-alkylidene-9H-fluorene unit in the main chain, poly[9-(1-hexylheptylidene)-2,7-fluorene-alt-5, 5-(4,7-di-2-thienyl-5,6-dialkoxy-2,1,3-benzothiadiazole)] (PAFDTBT), has been synthesized and evaluated in bulk heterojunction polymer solar cells (BHJ PSCs). The polymer possesses a low band gap of 1.84 eV, a low-lying HOMO energy level (5.32 eV), and excellent solubility in common organic solvents. PSCs based on PAFDTBT and (6,6)-phenyl-C(71)-butyric add methyl ester (PC(71)BM) demonstrate a power conversion efficiency (PCE) of 6.2% with a high fill factor (FF) of 0.70, which indicates that 9-alkylidene-9H-fluorene can be a very useful building block for constructing narrow band gap conjugated polymers for high-efficiency BHJ PSCs.
Ort, förlag, år, upplaga, sidor
American Chemical Society , 2011. Vol. 44, nr 19, s. 7617-7624
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Teknik och teknologier
Identifikatorer
URN: urn:nbn:se:liu:diva-71637DOI: 10.1021/ma201477bISI: 000295487600015OAI: oai:DiVA.org:liu-71637DiVA, id: diva2:451831
Anmärkning
Funding Agencies|NSF of China|2083400650821062|973 Program|2011CB9357032009CB-623603|IC, CAS from Swedish Research Council (VR)||
2011-10-272011-10-272017-12-08