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Title: Extended OLED operational lifetime through phosphorescent dopant profile management

Patent ·
OSTI ID:1360767
;

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.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
SC0001013
Assignee:
The Regents of the University of Michigan
Patent Number(s):
9,666,822
Application Number:
14/537,414
OSTI ID:
1360767
Resource Relation:
Patent File Date: 2014 Nov 10
Country of Publication:
United States
Language:
English

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