Organic electroluminescent device with low barrier height

Details Organic electroluminescent device with low barrier height Organic electroluminescent device with low barrier height

1993-01-05

1994-08-30

Hille, Rolf

Active solid-state devices (e.g., transistors, solid-state diode

Organic semiconductor material

257103, 313504, 313507, 313509, H01L 2928, H01L 3300

Patent

active

053430506

ABSTRACT:
There is disclosed an organic electroluminescent device, comprising a multilayered structure 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.

REFERENCES:
patent: 4720432 (1988-01-01), VanSlyke et al.
patent: 5093691 (1992-03-01), Utsugi et al.
patent: 5093698 (1992-03-01), Egusa
patent: 5105233 (1992-04-01), Egusa
patent: 5126214 (1992-06-01), Tokailin et al.
patent: 5151629 (1992-09-01), VanSlyke
Applied Physics Letters, vol. 56, p. 799, C. Adachi, et al., Sep. 4, 1984, "Blue Light-Emitting Organic Electroluminescent Devices."

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