Blue-light electroluminescence from <i>p</i>-phenylene vinylene-based copolymers

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  • Igor Sokolik
    Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
  • Zhou Yang
    Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
  • Frank E. Karasz
    Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
  • David C. Morton
    U. S. Army Laboratory Command, Electronics and Power Sources Directory, Fort Monmouth, New Jersey 07703-5000

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<jats:p>Electroluminescence (EL) in the blue region of the spectrum with a maximum at 465 nm was observed from polymer films sandwiched between indium-tin-oxide and Al electrodes. The specially designed soluble multiblock copolymers used consisted of chromophoric units that have uniform conjugation length and are spaced with polymethylene units of various lengths. EL originates from the radiative decay of the chromophore singlet excitation created as a result of the recombination of injected charge carriers.</jats:p>

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