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CASCADED LIGHT EMITTING DEVICES BASED ON MIXED CONDUCTOR ELECTROLUMINESCENCE

  • US 20100117518A1
  • Filed: 01/22/2010
  • Published: 05/13/2010
  • Est. Priority Date: 03/28/2005
  • Status: Active Grant
First Claim
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1. A cascaded light emitting device, comprising:

  • a split electrode structure formed of a first electrode material, the split electrode structure includes a plurality of electrode portions, an electrical resistance between any pair of electrode portions of the split electrode structure being greater than a split resistance, the plurality of electrode portions including a first electrode portion electrically coupled to a first voltage lead and a second electrode portion electrically coupled to a second voltage lead;

    an opposing electrode formed of a second electrode material; and

    at least one electroluminescent layer coupled between the split electrode structure and the opposing electrode, the at least one electroluminescent layer including a mixed conductor that luminesces with a peak wavelength, a total thickness of the at least one electroluminescent layer being such that a resistance across the at least one electroluminescent layer between an electrode portion of the split electrode structure and the opposing electrode is less than half of the split resistance.

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