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Title: Concave-hemisphere-patterned organic top-light emitting device

A first device is provided. The first device includes an organic light emitting device, which further comprises a first electrode, a second electrode, and an organic emissive layer disposed between the first and second electrode. Preferably, the second electrode is more transparent than the first electrode. The organic emissive layer has a first portion shaped to form an indentation in the direction of the first electrode, and a second portion shaped to form a protrusion in the direction of the second electrode. The first device may include a plurality of organic light emitting devices. The indentation may have a shape that is formed from a partial sphere, a partial cylinder, a pyramid, or a pyramid with a mesa, among others. The protrusions may be formed between adjoining indentations or between an indentation and a surface parallel to the substrate.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1117843
Assignee:
The Regents of the University of Michigan (Ann Arbor, MI) CHO
Patent Number(s):
8,633,497
Application Number:
12/731,249
Contract Number:
FG02-08ER85082
Resource Relation:
Patent File Date: 2010 Mar 25
Research Org:
The Regents of the University of Michigan, Ann Arbor, MI, USA
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Works referenced in this record:

Very high-efficiency green organic light-emitting devices based on electrophosphorescence
journal, July 1999
  • Baldo, M. A.; Lamansky, S.; Burrows, P. E.
  • Applied Physics Letters, Vol. 75, Issue 1, p. 4-6
  • DOI: 10.1063/1.124258