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Fluorescent filtered electrophosphorescence

Patent ·
OSTI ID:985857

The present invention relates to organic light emitting devices (OLEDs), and more specifically to OLEDS that emit light using a combination of fluorescent emitters and phosphorescent emitters for the efficient utilization of all of the electrically generated excitons.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, and Morgantown, WV (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-04NT42272
Assignee:
The Trustees of Princeton University (Princeton, NJ) The University of Southern California (Los Angeles, CA)
Patent Number(s):
7,474,048
Application Number:
11/143,319
OSTI ID:
985857
Country of Publication:
United States
Language:
English

References (25)

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Recent progress of molecular organic electroluminescent materials and devices journal December 2002
High-efficiency fluorescent organic light-emitting devices using a phosphorescent sensitizer journal February 2000
High Quantum Efficiency in Organic Light-Emitting Devices with Iridium-Complex as a Triplet Emissive Center journal December 1999
Electroluminescence of doped organic thin films journal May 1989
Recent developments in molecular organic electroluminescent materials journal January 1998
A Vapochromic LED journal January 1998
Transient analysis of organic electrophosphorescence: I. Transient analysis of triplet energy transfer journal October 2000
Efficient, Saturated Red Organic Light Emitting Devices Based on Phosphorescent Platinum(II) Porphyrins journal December 1999
Surface oxidation activates indium tin oxide for hole injection journal January 2000
Organic Vapor Phase Deposition journal December 1998
Bimolecular reactions of singlet excitons in tris (8‐hydroxyquinoline) aluminum journal December 1996
High-efficiency red electrophosphorescence devices journal March 2001
Energy level line-up in polymer light-emitting diodes via electroabsorption spectroscopy journal February 2001
Transient analysis of organic electrophosphorescence. II. Transient analysis of triplet-triplet annihilation journal October 2000
Use of Poly(9-vinylcarbazole) as Host Material for Iridium Complexes in High-Efficiency Organic Light-Emitting Devices journal August 2000
Polymer phosphorescent light-emitting devices doped with tris(2-phenylpyridine) iridium as a triplet emitter journal October 2000
Very high-efficiency green organic light-emitting devices based on electrophosphorescence journal July 1999
White light from InGaN/conjugated polymer hybrid light-emitting diodes journal May 1997
Nearly 100% internal phosphorescence efficiency in an organic light-emitting device journal November 2001
White-light-emitting organic electroluminescent devices based on interlayer sequential energy transfer journal August 1999
High-efficiency organic electrophosphorescent devices with tris(2-phenylpyridine)iridium doped into electron-transporting materials journal August 2000
Single‐layer white light‐emitting organic electroluminescent devices based on dye‐dispersed poly( N ‐vinylcarbazole) journal October 1995
Excitonic singlet-triplet ratio in a semiconducting organic thin film journal November 1999

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