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Issue 45, 2011
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Charge injection from organic charge-transfer salts to organic semiconductors

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Abstract

Highly conducting films of organic charge-transfer (CT) salts are fabricated by a solution process from the dispersions stabilized by poly(vinylpyrrolidone). This method provides a general way to obtain conducting films of nonvolatile organic cation- and anion-radical salts with inorganic counter ions. Carrier injection from organic CT salts to organic semiconductors is investigated by using these films as electrodes in organic field-effect transistors. Efficient hole injection is observed not only from organic cation-radical salts but also from anion-radical salts to pentacene and sexithiophene. Electron injection is dominant from both types of CT salts to C60, but hole injection and ambipolar characteristics are observed for cation-radical salts. The Fermi levels of the CT salts are discussed on the basis of these observations.

Graphical abstract: Charge injection from organic charge-transfer salts to organic semiconductors

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Publication details

The article was received on 17 Jun 2011, accepted on 21 Sep 2011 and first published on 19 Oct 2011


Article type: Paper
DOI: 10.1039/C1JM12783G
Citation: J. Mater. Chem., 2011,21, 18421-18424
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    Charge injection from organic charge-transfer salts to organic semiconductors

    T. Kadoya, D. de Caro, K. Jacob, C. Faulmann, L. Valade and T. Mori, J. Mater. Chem., 2011, 21, 18421
    DOI: 10.1039/C1JM12783G

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