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Solution-Processable Organic Molecule with Triphenylamine Core and Two Benzothiadiazole-Thiophene Arms for Photovoltaic Application
Chinese Academy of Science.
Chinese Academy of Science.
Linköping University, Department of Physics, Chemistry and Biology, Sensor Science and Molecular Physics . Linköping University, The Institute of Technology.
Chinese Academy of Science.
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2010 (English)In: JOURNAL OF PHYSICAL CHEMISTRY C, ISSN 1932-7447, Vol. 114, no 8, 3701-3706 p.Article in journal (Refereed) Published
Abstract [en]

A new solution-processable biarmed organic molecule With triphenylamine (TPA) core and benzothiadiazole-hexylthiophene (BT-HT) arms, B(TPA-BT-HT), has been synthesized by a Heck reaction, and characterized by UV-vis absorption, cyclic voltammetry, and theoretical calculation. Photovoltaic properties of B(TPA-BT-HT) as light-harvesting and electron-donating material in organic solar cells (OSCs), with [6,6]-phenyl-C61-butyric acid methyl ester (PC60BM) or [6,6]-phenyl-C71-butyric acid methyl ester (PC70BM) as acceptors, were systematically investigated. The performance of the OSCs varied significantly with B(TPA-BT-HT)/fullerene weight ratio, active layer thickness, and solvents Used For spin-coating the active layer. The optimized device with the B(TPA-BT-HT)/PC70BM weight ratio of 1:2 and a thickness of 55 nm with the active layer spin-coated from DCB solution Shows a power conversion efficiency of 1.96% with a short-circuit current density of 5.50 mA/cm(2) and in open-circuit voltage of 0.96 V under (lie illumination of AM 1.5, 100 mw/cm(2).

Place, publisher, year, edition, pages
2010. Vol. 114, no 8, 3701-3706 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-54395DOI: 10.1021/jp910836tISI: 000274842700053OAI: oai:DiVA.org:liu-54395DiVA: diva2:303544
Available from: 2010-03-12 Created: 2010-03-12 Last updated: 2010-03-12

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Zhou, YeAndersson, MattiasInganäs, OlleZhang, Fengling

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