Carrier injection type organic electro-luminescent device which

Details Carrier injection type organic electro-luminescent device which Carrier injection type organic electro-luminescent device which

1996-09-12

1998-11-10

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313503, 313506, 313507, 313504, H01J 162

Patent

active

058348948

ABSTRACT:
A carrier-injection type organic electroluminescent device includes, provided on a substrate, a transparent anode electrode, and a hole transport layer containing hole-transporting poly(N-vinylcarbazole) and 2,5-bis(1-naphthyl)-oxadiazole, and 3-(2'-benzothiazoyl)-7-diethylaminocoumarin as a fluorescent material which absorbs light within a predetermined wavelength range and emits light having a longer wavelength. Further included are an electron transport layer containing an electron-transporting tris(8-quinolinolate)aluminum complex, and a cathode electrode. When a voltage is applied between the anode and the cathode, the fluorescent material absorbs light emitted by the recombination of electrons and holes, and emits visible light.

REFERENCES:
patent: 4356429 (1982-10-01), Tang
patent: 5281489 (1994-01-01), Mori et al.
patent: 5304895 (1994-04-01), Ujihara
patent: 5554450 (1996-09-01), Shi et al.
patent: 5652067 (1997-07-01), Ito et al.

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