Advanced Materials

Flexible arrays of submicrometer-sized polymeric light emitting diodes

Authors

  • Dr. Magnus Granström,

    Corresponding author
    1. Laboratory of Applied Physics Department of Physics and Measurement Technology (IFM) Linkoping University S-58183 Linkoping (Sweden)
    • Laboratory of Applied Physics Department of Physics and Measurement Technology (IFM) Linkoping University S-58183 Linkoping (Sweden)
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  • Prof. Olle Inganas

    1. Laboratory of Applied Physics Department of Physics and Measurement Technology (IFM) Linkoping University S-58183 Linkoping (Sweden)
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  • The iron(III) tris-p-toluenesulfonate salt was prepared by Dr. Xiwen Chen. This work was supported by the Micronics Program of the Swedish National Board for Industrial and Technical Development (NUTEK)

Abstract

Arrays of small polymer-based LEDs have been produced using a technique based on polymer self-organization. The active component, a polybithiophene, is shown to form small (50–200 nm) islands in a PMMA matrix when the two materials are mixed in an appropriate ratio. These islands become light emitters when electron- and hole-injecting contacts are applied. The generation of the arrays is described and the use of polymer-based hole-injecting contacts, which provide mechanical flexibility, is discussed.

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