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Title: Stable blue phosphorescent organic light emitting devices

Abstract

Novel combination of materials and device architectures for organic light emitting devices is provided. An organic light emitting device, is provided, having an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer includes a host and a phosphorescent emissive dopant having a peak emissive wavelength less than 500 nm, and a radiative phosphorescent lifetime less than 1 microsecond. Preferably, the phosphorescent emissive dopant includes a ligand having a carbazole group.

Inventors:
; ;
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1151770
Patent Number(s):
8815411
Application Number:
12/257,638
Assignee:
The Regents of the University of Michigan (Ann Arbor, MI); University of Southern California (Los Angeles, CA)
Patent Classifications (CPCs):
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
DOE Contract Number:  
FC26-04NT42272
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Forrest, Stephen R., Thompson, Mark, and Giebink, Noel. Stable blue phosphorescent organic light emitting devices. United States: N. p., 2014. Web.
Forrest, Stephen R., Thompson, Mark, & Giebink, Noel. Stable blue phosphorescent organic light emitting devices. United States.
Forrest, Stephen R., Thompson, Mark, and Giebink, Noel. Tue . "Stable blue phosphorescent organic light emitting devices". United States. https://www.osti.gov/servlets/purl/1151770.
@article{osti_1151770,
title = {Stable blue phosphorescent organic light emitting devices},
author = {Forrest, Stephen R. and Thompson, Mark and Giebink, Noel},
abstractNote = {Novel combination of materials and device architectures for organic light emitting devices is provided. An organic light emitting device, is provided, having an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer includes a host and a phosphorescent emissive dopant having a peak emissive wavelength less than 500 nm, and a radiative phosphorescent lifetime less than 1 microsecond. Preferably, the phosphorescent emissive dopant includes a ligand having a carbazole group.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {8}
}

Works referenced in this record:

Electroluminescent device with modified thin film luminescent zone
patent, September 1988


Electroluminescent devices
patent, September 1993


Transparent contacts for organic devices
patent, December 1997


Multicolor organic light emitting devices
patent, January 1998


High efficiency organic light emitting devices with light directing structures
patent, November 1998


Vacuum deposited, non-polymeric flexible organic light emitting devices
patent, December 1998


Organic electroluminescent device with graded region
patent, July 1999


Saturated full color stacked organic light emitting devices
patent, August 1999


Organic electroluminescent device with plural microcavities
patent, September 1999


Multicolor display devices
patent, January 2000


Fabrication of organic semiconductor devices using ink jet printing
patent, July 2000


Displays having mesa pixel configuration
patent, July 2000


Structure for high efficiency electroluminescent device
patent, August 2000


Organic electroluminescent device with improved reliability
patent, February 2001


Method for patterning devices
patent, September 2001


OLEDs doped with phosphorescent compounds
patent, October 2001


Method of purifying a primary color generated by an OED
patent, December 2001


Low pressure vapor phase deposition of organic thin films
patent, January 2002


Method for patterning organic thin film devices using a die
patent, October 2002


Highly efficient OLEDs using doped ambipolar conductive molecular organic thin films
patent, June 2003


Doping of organic opto-electronic devices to extend reliability
patent, February 2007


Complexes with tridentate ligands
patent, October 2007


Very Low Voltage, High Efficiency Phosphorescent OLED in a p-i-n Structure
patent-application, December 2003


Transparent electrodes
patent-application, September 2004


Phosphorescent dendrimers for use in light-emitting devices
patent-application, June 2005


Flat panel light emitting devices with two sided
patent-application, January 2006


Stability OLED materials and devices
patent-application, November 2006


High-molecular copolymer containing metal coordination compound and organic electroluminescence element using the same
patent-application, December 2006


Stable and efficient electroluminescent materials
patent-application, January 2007


Electron impeding layer for high efficiency phosphorescent OLEDs
patent-application, April 2007


Metal coordination compound, polymer composition, and organic electroluminescent device employing same
patent-application, June 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


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


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


Management of singlet and triplet excitons for efficient white organic light-emitting devices
journal, April 2006


Highly Branched Phosphorescent Dendrimers for Efficient Solution-Processed Organic Light-Emitting Diodes
journal, May 2007


Surface Plasmon Mediated Emission from Organic Light-Emitting Diodes
journal, October 2002


Efficient organic light-emitting diode using semitransparent silver as anode
journal, October 2005


Characterization of thin-metal anode buffers in organic devices
journal, January 2006


Efficiency improvement of phosphorescent organic light-emitting diodes using semitransparent Ag as anode
journal, January 2006


Au-ITO anode for efficient polymer light-emitting device operation
journal, March 2005


Enhancement of hole injection using ozone treated Ag nanodots dispersed on indium tin oxide anode for organic light emitting diodes
journal, April 2007


Free-radical pathways in operational degradation of OLEDs
journal, January 2008


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


47.2: Distinguished Paper : Structural Identification of Chemical Products and Mechanism of Operational Degradation of OLEDs
journal, May 2007


Intrinsic luminance loss in phosphorescent small-molecule organic light emitting devices due to bimolecular annihilation reactions
journal, February 2008


Triplet-exciton quenching in organic phosphorescent light-emitting diodes with Ir-based emitters
journal, March 2007


Surface plasmon-polariton mediated emission from phosphorescent dendrimer light-emitting diodes
journal, April 2006


Transient analysis of organic electrophosphorescence. II. Transient analysis of triplet-triplet annihilation
journal, October 2000


Optical properties of molecular organic semiconductor thin films under intense electrical excitation
journal, February 1999


Efficient, deep-blue organic electrophosphorescence by guest charge trapping
journal, November 2003


In Situ Purification of Organic Materials for Organic Light-Emitting Device Fabrication
journal, August 2001


Graded doping profiles for reduction of carrier trapping in organic light-emitting devices incorporating doped polymers
journal, January 2001


Highly efficient simplified organic light emitting diodes
journal, September 2007


Observation of the Mott–Gurney law in tris (8-hydroxyquinoline) aluminum films
journal, February 2002


Reliability and degradation of small molecule-based organic light-emitting devices (OLEDs)
journal, January 2002


The mechanism of lifetime extension due to CuPc injection layer in organic light-emitting diodes
conference, September 2004


Photo and photo-oxidative degradations of poly(phenylene vinylene) derivatives
journal, June 2002