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Title: Extended OLED operational lifetime through phosphorescent dopant profile management

This disclosure relates, at least in part, an organic light emitting device, which in some embodiments comprises an anode; a cathode; a first emissive layer disposed between the anode and the cathode, the first emissive layer comprising an electron transporting compound and a phosphorescent emissive dopant compound; and wherein the phosphorescent emissive dopant compound has a concentration gradient, in the emissive layer, which varies from the cathode side of the first emissive layer to the anode side of the emissive layer.
Inventors:
;
Issue Date:
OSTI Identifier:
1360767
Assignee:
The Regents of the University of Michigan EFRC
Patent Number(s):
9,666,822
Application Number:
14/537,414
Contract Number:
SC0001013
Resource Relation:
Patent File Date: 2014 Nov 10
Research Org:
The Regents of the University of Michigan, Ann Arbor, MI (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

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