Organic electroluminescent devices
AssigneesJunji Kido, International Manufacturing and Engineering Services Co., Ltd.
InventorsJunji Kido, Tokio Mizukami
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Abstract
An organic electroluminescent (EL) device includes at least one luminescent layer having an organic compound doped with a metal capable of acting as a donor dopant, in adjacent to a cathode electrode. The EL device ensures a diminished energy barrier in an electron injection from the cathode electrode into the luminescent layer, i.e., metal-doped organic compound layer, and thus a lowered driving voltage. The lowered driving voltage can be obtained regardless of the work function of the cathode material.
Claims6
An organic electroluminescent device comprising:
- an anode electrode;
- a cathode electrode opposed to said electrode;
- at least one luminescent layer constituted from an organic compound positioned between said anode electrode and cathode electrode;
- and
- a layer of an organic compound doped with a metal capable of acting as a donor dopant, said layer of an organic compound being positioned in an interfacial surface with said cathode electrode.
An organic electroluminescent device comprising at least one luminescent layer constituted from an organic compound, positioned between an anode electrode and a cathode electrode opposed to each other, in which a layer of an organic compound doped with a metal capable of acting as a donor dopant is contained in an interfacial surface with said cathode electrode.
Dependencies are inferred from the claim text.