Organic light emitting device architecture for reducing the number of organic materials
First Claim
1. An organic light emitting device, comprising:
- an anode;
a cathode;
a first emissive layer disposed between the anode and the cathode, the first emissive layer comprising;
a first non-emitting organic material, wherein the first non-emitting material is organometallic and is present in the first emissive layer in a concentration of at least 50 wt %; and
a first emitting organic material;
a second emissive layer disposed between the first emissive layer and the cathode, and in direct contact with the first emissive layer, the second emissive layer comprising;
a second non-emitting organic material; and
a second emitting organic material;
a first non-emissive layer disposed between the first emissive layer and the anode, and in direct contact with the first emissive layer, the first non-emissive layer comprising the first non-emissive organic material.
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Abstract
An organic light emitting device is provided. The device includes an anode and a cathode. A first emissive layer is disposed between the anode and the cathode. The first emissive layer includes a first non-emitting organic material, which is an organometallic material present in the first emissive layer in a concentration of at least 50 wt %. The first emissive layer also includes a first emitting organic material. A second emissive layer is disposed between the first emissive layer and the cathode, preferably, in direct contact with the first emissive layer. The second emissive material includes a second non-emitting organic material and a second emitting organic material. The first and second non-emitting materials, and the first and second emitting materials, are all different materials. A first non-emissive layer is disposed between the first emissive layer and the anode, and in direct contact with the first emissive layer. The first non- emissive layer comprises the first non-emissive organic material.
58 Citations
12 Claims
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1. An organic light emitting device, comprising:
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an anode; a cathode; a first emissive layer disposed between the anode and the cathode, the first emissive layer comprising; a first non-emitting organic material, wherein the first non-emitting material is organometallic and is present in the first emissive layer in a concentration of at least 50 wt %; and a first emitting organic material; a second emissive layer disposed between the first emissive layer and the cathode, and in direct contact with the first emissive layer, the second emissive layer comprising; a second non-emitting organic material; and a second emitting organic material; a first non-emissive layer disposed between the first emissive layer and the anode, and in direct contact with the first emissive layer, the first non-emissive layer comprising the first non-emissive organic material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification