Advanced Materials

Highly Efficient Blue Electroluminescence from Poly(phenylene ethynylene) via Energy Transfer from a Hole-Transport Matrix

Authors

  • C. A. Breen,

    1. Department of Chemistry, and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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  • J. R. Tischler,

    1. Laboratory of Organic Optics and Electronics, Department of Electrical Engineering and Computer Science and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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  • V. Bulović,

    1. Laboratory of Organic Optics and Electronics, Department of Electrical Engineering and Computer Science and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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  • T. M. Swager

    1. Department of Chemistry, and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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  • This work was supported by the U.S. Army through the Institute for Soldier Nanotechnologies, under Contract DAAD-19–02–0002 with the U.S. Army Research Office and MIT MRSEC Program of the National Science Foundation under award number DMR 02–13282.

Abstract

Blue poly(phenylene ethynylene) (PPE) electroluminescence (EL, see Figure) is observed in a hybrid organic light-emitting diode (OLED) with Commission Internationale de l'Eclairage coordinates of (x = 0.17; y = 0.20). Energy transfer from a hole-transport host to polystyrene-grafted PPEs is utilized to improve the poor LED characteristics of traditional PPE-based systems.

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