OLEDs doped with phosphorescent compounds
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Abstract
Organic light emitting devices are disclosed which are comprised of a heterostructure for producing electroluminescence wherein the heterostructure is comprised of an emissive layer containing a phosphorescent dopant compound. For example, the phosphorescent dopant compound may be comprised of platinum octaethylporphine (PtOEP), which is a compound having the chemical structure with the formula:
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1-20. -20. (canceled)
- 21. An organic light emitting device comprising an anode, a cathode and an emissive layer, wherein the emissive layer is located between the anode and the cathode, and the emissive layer comprises a phosphorescent material and a charge carrying host material, wherein the phosphorescent material emits phosphorescent radiation from a triplet molecular excited state with an external quantum efficiency of not less than 0.07% at room temperature when a voltage is applied across the organic light emitting device.
- 31. An organic light emitting device comprising an anode, a cathode and an emissive layer, wherein the emissive layer is located between the anode and the cathode, and the emissive layer comprises a phosphorescent material and a charge carrying host material, wherein the phosphorescent material emits phosphorescent radiation from a triplet molecular excited state with an external quantum efficiency of not less than 0.07% at room temperature when a voltage is applied across the organic light emitting device, and wherein the phosphorescent material is capable of having a photoluminescent quantum yield greater than 50% at room temperature in the solid state.
Specification