Organic light emitting device architecture for reducing the number of organic materials

D'Andrade, Brian; Esler, James

Title: Organic light emitting device architecture for reducing the number of organic materials

Patent · Tue Oct 18 00:00:00 EDT 2011

OSTI ID:1028663

D'Andrade, Brian ^[1]; Esler, James ^[2]

Westampton, NJ
Levittown, PA

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.

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Research Organization:: Universal Display Corporation (Ewing, NJ)

Sponsoring Organization:: USDOE

DOE Contract Number:: FG02-06ER84582

Assignee:: Universal Display Corporation (Ewing, NJ)

Patent Number(s):: 8,040,053

Application Number:: 12/332,945

OSTI ID:: 1028663

Country of Publication:: United States

Language:: English

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