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Title: High efficiency and brightness fluorescent organic light emitting diode by triplet-triplet fusion

Abstract

A first device is provided. The first device further comprises an organic light emitting device. The organic light emitting device further comprises an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer may include an organic host compound and at least one organic emitting compound capable of fluorescent emission at room temperature. Various configurations are described for providing a range of current densities in which T-T fusion dominates over S-T annihilation, leading to very high efficiency fluorescent OLEDs.

Inventors:
;
Issue Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1169611
Patent Number(s):
8952362
Application Number:
13/600,651
Assignee:
The Regents of the University of Michigan (Ann Arbor, MI)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
DOE Contract Number:  
SC0001013
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Forrest, Stephen, and Zhang, Yifan. High efficiency and brightness fluorescent organic light emitting diode by triplet-triplet fusion. United States: N. p., 2015. Web.
Forrest, Stephen, & Zhang, Yifan. High efficiency and brightness fluorescent organic light emitting diode by triplet-triplet fusion. United States.
Forrest, Stephen, and Zhang, Yifan. Tue . "High efficiency and brightness fluorescent organic light emitting diode by triplet-triplet fusion". United States. https://www.osti.gov/servlets/purl/1169611.
@article{osti_1169611,
title = {High efficiency and brightness fluorescent organic light emitting diode by triplet-triplet fusion},
author = {Forrest, Stephen and Zhang, Yifan},
abstractNote = {A first device is provided. The first device further comprises an organic light emitting device. The organic light emitting device further comprises an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer may include an organic host compound and at least one organic emitting compound capable of fluorescent emission at room temperature. Various configurations are described for providing a range of current densities in which T-T fusion dominates over S-T annihilation, leading to very high efficiency fluorescent OLEDs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {2}
}

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Works referenced in this record:

Organic electroluminescent device having a hole conductor as an emitting layer
journal, October 1989


Nearly 100% internal phosphorescence efficiency in an organic light-emitting device
journal, November 2001


High-efficiency red electrophosphorescence devices
journal, March 2001


Material design of hole transport materials capable of thick-film formation in organic light emitting diodes
journal, April 2007


Highly efficient phosphorescent emission from organic electroluminescent devices
journal, September 1998


Very high-efficiency green organic light-emitting devices based on electrophosphorescence
journal, July 1999


Bright-blue electroluminescence from a silyl-substituted ter-(phenylene–vinylene) derivative
journal, February 1999


High Luminance in Organic Electroluminescent Devices with Bis(10-hydroxybenzo[h]quinolinato)beryllium as an Emitter
journal, May 1993


Blue organic electrophosphorescence using exothermic host–guest energy transfer
journal, April 2003


Novel high Tg hole-transport molecules based on indolo[3,2-b]carbazoles for organic light-emitting devices
journal, June 2000


Highly Phosphorescent Bis-Cyclometalated Iridium Complexes Containing Benzoimidazole-Based Ligands
journal, June 2004


Anode modification in organic light-emitting diodes by low-frequency plasma polymerization of CHF3
journal, January 2001


Highly efficient phosphorescence from organic light-emitting devices with an exciton-block layer
journal, July 2001


P-185: Low-Drive-Voltage OLEDs with a Buffer Layer Having Molybdenum Oxide
journal, January 2006


Highly efficient and stable red phosphorescent organic light-emitting device using bis[2-(2-benzothiazoyl)phenolato]zinc(II) as host material
journal, March 2007


1,2,4-Triazole Derivative as an Electron Transport Layer in Organic Electroluminescent Devices
journal, July 1993


High operational stability of electrophosphorescent devices
journal, July 2002


Synthesis and Characterization of Phosphorescent Cyclometalated Iridium Complexes
journal, March 2001


Polymer phosphorescent light-emitting devices doped with tris(2-phenylpyridine) iridium as a triplet emitter
journal, October 2000


Blue Phosphorescence from Iridium(III) Complexes at Room Temperature
journal, October 2006


Triplet luminescent dinuclear-gold( I ) complex-based light-emitting diodes with low turn-on voltage
journal, March 1999


Thermally Stable Hole-Transporting Material for Organic Light-Emitting Diode:  an Isoindole Derivative
journal, August 2003


Highly Efficient Electrophosphorescent Devices with Saturated Red Emission from a Neutral Osmium Complex
journal, June 2005


Green fluorescent organic light-emitting device with external quantum efficiency of nearly 10%
journal, August 2006


High efficiency molecular organic light-emitting diodes based on silole derivatives and their exciplexes
journal, September 2003


Realizing Green Phosphorescent Light-Emitting Materials from Rhenium(I) Pyrazolato Diimine Complexes
journal, February 2003


Synthesis, Characterization, and Electron-Transport Property of Perfluorinated Phenylene Dendrimers
journal, March 2000


Starburst molecules based on π-electron systems as materials for organic electroluminescent devices
journal, June 1997


Efficient organic light-emitting diodes with phosphorescent platinum complexes containing N∧C∧N-coordinating tridentate ligand
journal, April 2005


High-efficiency white organic light emitting devices with three separate phosphorescent emission layers
journal, December 2007


Langmuir—Blodgett light-emitting diodes of poly(3-hexylthiophene) : electro-optical characteristics related to structure
journal, May 1997


Organic electroluminescent diodes
journal, September 1987


Organic Light-Emitting Diodes based on Charge-Neutral RuII Phosphorescent Emitters
journal, April 2005


Organic electroluminescent devices with improved stability
journal, October 1996


Highly efficient electroluminescent materials based on fluorinated organometallic iridium compounds
journal, July 2001


Multifunctional Iridium Complexes Based on Carbazole Modules as Highly Efficient Electrophosphors
journal, November 2006


First Examples of Alkenyl Pyridines as Organic Ligands for Phosphorescent Iridium Complexes
journal, November 2004