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Electron-injecting layer providing a modified interface between an organic light-emitting structure and a cathode buffer layer

  • US 6,172,459 B1
  • Filed: 07/28/1998
  • Issued: 01/09/2001
  • Est. Priority Date: 07/28/1998
  • Status: Expired due to Term
First Claim
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1. An organic light-emitting device comprising:

  • a) a substrate;

    b) an anode disposed over the substrate;

    c) an organic light-emitting structure disposed over the anode;

    d) a cathode buffer layer disposed over the organic light-emitting structure and of a material selected to permit high energy deposition of a cathode, the cathode buffer layer including porphyrinic compounds;

    e) a cathode disposed over the cathode buffer layer; and

    f) an interfacial layer provided with an electron-injecting material between the organic light-emitting structure and the cathode buffer layer, wherein the cathode buffer layer includes porphyrinic compounds.

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