Impact of regioregularity on thin-film transistor and photovoltaic cell performances of pentacene-containing polymers
Oh, Joon Hak
Toney, Michael F.
McGehee, Michael D.
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AbstractRegioregular pentacene-containing polymers were synthesized with alkylated bithiophene (BT) and cyclopentadithiophene (CPDT) as comonomers. Among them, 2,9-conjugated polymers PnBT-2,9 and PnCPDT-2,9 achieved the best performance in transistor and photovoltaic devices respectively. The former achieved the most highly ordered structures in thin films, yielding ambipolar transistor behavior with hole and electron mobilities up to 0.03 and 0.02 cm 2 V -1 s -1 on octadecylsilane-treated substrates. The latter achieved photovoltaic power conversion efficiencies up to 0.33%. The impact of regioregularity and direction of conjugation-extension (2,9 vs. 2,10), on thin-film order and device performance has been demonstrated for the pentacene-containing polymers for the first time, providing insight towards future functional material design. © 2012 The Royal Society of Chemistry.
CitationJiang Y, Hong S, Oh JH, Mondal R, Okamoto T, et al. (2012) Impact of regioregularity on thin-film transistor and photovoltaic cell performances of pentacene-containing polymers. J Mater Chem 22: 4356. Available: http://dx.doi.org/10.1039/c2jm15483h.
SponsorsZ. Bao acknowledges funding from National Science Foundation Solid State Chemistry (DMR-0705687-002). Y. Jiang acknowledges funding from Agency for Science, Technology and Research, Singapore. J.H. Oh acknowledges partial financial support from Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the MEST (grant no. 2010-0025292) and 2010 Research Fund of UNIST. This publication was partially based on work supported by the Center for Advanced Molecular Photovoltaics (CAMP) (award no. KUS-C1-015-21), made by King Abdullah University of Science and Technology (KAUST). Portions of this research were carried out at the Stanford Synchrotron Radiation Lightsource, a Directorate of SLAC National Accelerator Laboratory and an Office of Science User Facility operated for the U.S. Department of Energy Office of Science by Stanford University.
PublisherRoyal Society of Chemistry (RSC)
JournalJournal of Materials Chemistry