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Low molecular weight and polymeric triphenylenes as hole transport materials in organic two-layer LEDs

Authors

  • Andreas Bacher,

    1. Lehrstuhl Makromolekulare Chemie I and Bayreuther Institut für Makromolekülforschung (BIMF) Universität Bayreuth, D-95440 Bayreuth (Germany)
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  • Ingo Bleyl,

    1. Lehrstuhl Experimentalphysik IV and Bayreuther Institut für Makromolekulforschung (BIMF) Universität Bayreuth, D-95440 Bayreuth (Germany)
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  • Dr. Christian H. Erdelen,

    1. Lehrstuhl Makromolekulare Chemie I and Bayreuther Institut für Makromolekülforschung (BIMF) Universität Bayreuth, D-95440 Bayreuth (Germany)
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  • Prof. Dietrich Haarer,

    1. Lehrstuhl Experimentalphysik IV and Bayreuther Institut für Makromolekulforschung (BIMF) Universität Bayreuth, D-95440 Bayreuth (Germany)
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  • Dr. Wolfgang Paulus,

    1. BASF AG D-67056 Ludwigshafen (Germany)
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  • Prof. Hans-Werner Schmidt

    Corresponding author
    1. Lehrstuhl Makromolekulare Chemie I and Bayreuther Institut für Makromolekülforschung (BIMF) Universität Bayreuth, D-95440 Bayreuth (Germany)
    • Lehrstuhl Makromolekulare Chemie I and Bayreuther Institut für Makromolekulforschung (BIMF) Universität Bayreuth, D-95440 Bayreuth (Germany)
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  • This work was supported by the BMBF Project No. 03 M 4084 A0 and the BMBF Project No. 03 N 100 4 D9.

Abstract

The benefits of using hexa-alkoxytriphenylenes as hole transport materials for two-layer light-emitting diodes are reported. Both low molecular weight and polymeric triphenylenes are investigated. The polyacrylate shown in the figure is demonstrated to have excellent film-forming properties and combines sufficient charge carrier mobility with good hole injection properties to make it a very suitable hole transport material.

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