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Electroluminescent devices

  • US 6,897,473 B1
  • Filed: 03/12/1999
  • Issued: 05/24/2005
  • Est. Priority Date: 03/13/1998
  • Status: Expired due to Term
First Claim
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1. An electroluminescent device comprising:

  • a first charge carrier injecting layer for injecting positive charge carriers;

    a second charge carrier injecting layer for injecting negative charge carriers; and

    a light-emissive layer located between the charge carrier injecting layers and comprising;

    a first component for accepting positive charge carriers from the first charge carrier injecting layer;

    a second component for accepting negative charge carriers from the second charge carrier injecting layer; and

    a third, organic light-emissive component for generating light as a result of combination of charge carriers from the first and second components;

    the first, second and third components being combined into a single molecule; and

    at least one of the first, second and third components forming a type II semiconductor interface with another of the first, second and third components.

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