Organic electroluminescent device
First Claim
1. An organic electroluminescent device comprising a hole injecting electrode,an electron injecting electrode, an organic layer participating in a light emitting function disposed between the electrodes, said organic layer including a light emitting layer comprising a conjugated polymer, and an inorganic insulative hole injecting layer disposed between the light emitting layer and the hole injecting electrode, wherein said inorganic insulative hole injecting layer contains as a main component an oxide represented by the formula:
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Abstract
An organic EL device has a hole injecting electrode (2), an electron injecting electrode (6), an organic layer participating in a light emitting function disposed between the electrodes. The organic layer includes a light emitting layer (4) comprising a conjugated polymer. The device further includes an inorganic insulative hole injecting layer (3) or an inorganic insulative electron injecting layer (5). The device can take advantage of both organic and inorganic materials, and has an improved efficiency, an extended effective life, and a low cost.
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Citations
20 Claims
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1. An organic electroluminescent device comprising a hole injecting electrode,
an electron injecting electrode, an organic layer participating in a light emitting function disposed between the electrodes, said organic layer including a light emitting layer comprising a conjugated polymer, and an inorganic insulative hole injecting layer disposed between the light emitting layer and the hole injecting electrode, wherein said inorganic insulative hole injecting layer contains as a main component an oxide represented by the formula:
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11. An organic electroluminescent device comprising
a hole injecting electrode, an electron injecting electrode, an organic layer participating in a light emitting function disposed between the electrodes, said organic layer including a light emitting layer comprising a conjugated polymer, and an inorganic insulative electron injecting layer disposed between the light emitting layer and the electron injecting electrode, wherein said inorganic insulative electron injecting layer contains a metal oxide having an electron affinity of up to 3.5 eV as a main component and at least one member selected from the group consisting of oxides, nitrides and carbides of silicon and germanium.
Specification