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Issue 10, 2012
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Impact of regioregularity on thin-film transistor and photovoltaic cell performances of pentacene-containing polymers

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Abstract

Regioregular 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 cm2 Vāˆ’1 sāˆ’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.

Graphical abstract: Impact of regioregularity on thin-film transistor and photovoltaic cell performances of pentacene-containing polymers

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Publication details

The article was received on 27 Oct 2011, accepted on 30 Nov 2011 and first published on 06 Jan 2012


Article type: Paper
DOI: 10.1039/C2JM15483H
Citation: J. Mater. Chem., 2012,22, 4356-4363
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    Impact of regioregularity on thin-film transistor and photovoltaic cell performances of pentacene-containing polymers

    Y. Jiang, S. Hong, J. H. Oh, R. Mondal, T. Okamoto, E. Verploegen, M. F. Toney, M. D. McGehee and Z. Bao, J. Mater. Chem., 2012, 22, 4356
    DOI: 10.1039/C2JM15483H

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