Organic Electroluminescent materials and devices
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Accused Products
Abstract
Novel tricarbazole compounds are provided. By appropriately selecting the nature of the tricarbazole substituents, compounds with appropriate HOMO and LUMO energies can be obtained for use as materials in a secondary hole transport layer.
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Citations
24 Claims
- 1. A compound having the formula:
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11. A first device comprising a first organic light emitting device, further comprising:
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an anode; a cathode; a hole injection layer disposed between the anode and the emissive layer; a first hole transport layer disposed between the hole injection layer and the emissive layer; and a second hole transport layer disposed between the first hole transport layer and the emissive layer; wherein the second hole transport layer comprises a compound of formula; - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A first device comprising an organic light emitting device, further comprising:
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an anode; a cathode; a first organic layer disposed between the anode and the cathode; and wherein the first organic layer comprises a compound of formula; - View Dependent Claims (23, 24)
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Specification