Organic electroluminescent device and method of manufacturing the same
First Claim
1. An organic EL device comprising a light-emitting layer between a first electrode and a second electrode, wherein the light-emitting layer comprises a matrix polymer, two or more phosphorescent host materials, and at least one phosphorescent dopant.
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Abstract
Provided is an organic EL device including a light-emitting layer between a first electrode and a second electrode, wherein the light-emitting layer includes a matrix polymer, two or more phosphorescent host materials, and at least one phosphorescent dopant. The organic EL device can increase an energy transfer efficiency by use of a mixture of phosphorescent host materials, and thus have better efficiency and lifetime characteristics, and can be produced by a solution process such as spin-coating.
30 Citations
20 Claims
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1. An organic EL device comprising a light-emitting layer between a first electrode and a second electrode,
wherein the light-emitting layer comprises a matrix polymer, two or more phosphorescent host materials, and at least one phosphorescent dopant.
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18. A method of manufacturing an organic EL device comprising a light-emitting layer between a first electrode and a second electrode, the method comprising:
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mixing a matrix polymer, two or more host materials, and at least one phosphorescent dopant material to prepare a composition for forming the light-emitting layer; and
coating the composition onto the first electrode. - View Dependent Claims (19, 20)
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Specification