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Organic electroluminescent device with low barrier height

  • US 5,343,050 A
  • Filed: 01/05/1993
  • Issued: 08/30/1994
  • Est. Priority Date: 01/07/1992
  • Status: Expired due to Term
First Claim
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1. An organic electroluminescent device, comprising a multilayered structure consisting of an organic film for electron injection and an organic film for hole injection, at least one of which consists of a plurality of layers, and an organic film serving as a light-emitting layer interposed therebetween, a first electrode for electron injection formed on the side of the organic film for electron injection of the multilayered structure, and a second electrode for hole injection formed on the side of the organic film for hole injection of the multilayered structure, wherein a barrier height against electron injection at each interface between layers present from the first electrode to the organic film serving as the light-emitting layer is not more than 0.6 eV, and a barrier height against hole injection at each interface between layers present from the second electrode to the organic film serving as the light-emitting layer is not more than 0.6 eV.

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