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Title: Organic light emitting device structures for obtaining chromaticity stability

Abstract

The present invention relates to organic light emitting devices (OLEDs). The devices of the present invention are efficient white or multicolored phosphorescent OLEDs which have a high color stability over a wide range of luminances. The devices of the present invention comprise an emissive region having at least two emissive layers, with each emissive layer comprising a different host and emissive dopant, wherein at least one of the emissive dopants emits by phosphorescence.

Inventors:
; ;
Issue Date:
Research Org.:
Universal Display Corporation, Ewing, NJ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175332
Patent Number(s):
6885025
Application Number:
10/618,160
Assignee:
Universal Display Corporation (Ewing, NJ)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
DOE Contract Number:  
FG02-02ER83565
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Tung, Yeh-Jiun, Lu, Michael, and Kwong, Raymond C. Organic light emitting device structures for obtaining chromaticity stability. United States: N. p., 2005. Web.
Tung, Yeh-Jiun, Lu, Michael, & Kwong, Raymond C. Organic light emitting device structures for obtaining chromaticity stability. United States.
Tung, Yeh-Jiun, Lu, Michael, and Kwong, Raymond C. Tue . "Organic light emitting device structures for obtaining chromaticity stability". United States. https://www.osti.gov/servlets/purl/1175332.
@article{osti_1175332,
title = {Organic light emitting device structures for obtaining chromaticity stability},
author = {Tung, Yeh-Jiun and Lu, Michael and Kwong, Raymond C.},
abstractNote = {The present invention relates to organic light emitting devices (OLEDs). The devices of the present invention are efficient white or multicolored phosphorescent OLEDs which have a high color stability over a wide range of luminances. The devices of the present invention comprise an emissive region having at least two emissive layers, with each emissive layer comprising a different host and emissive dopant, wherein at least one of the emissive dopants emits by phosphorescence.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {4}
}

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Works referenced in this record:

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


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


High-efficiency electrophosphorescent organic light-emitting diodes with double light-emitting layers
journal, November 2002