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Phosphorescent White OLEDs for Solid-state Lighting

Published online by Cambridge University Press:  31 January 2011

Sean Xia ,
Peter Levermore ,
Vadim Adamovich ,
Chun Lin ,
Raymond C. Kwong ,
Michael S. Weaver  and
Julie J. Brown
Sean Xia
Affiliation:
sxia@universaldisplay.com, Universal Display Corporation, Ewing, New Jersey, United States
Peter Levermore
Affiliation:
plevermore@universaldisplay.com, Universal Display Corporation, Ewing, New Jersey, United States
Vadim Adamovich
Affiliation:
vadamovich@universaldisplay.com, Universal Display Corporation, Ewing, New Jersey, United States
Chun Lin
Affiliation:
clin@universaldisplay.com, Universal Display Corporation, Ewing, New Jersey, United States
Raymond C. Kwong
Affiliation:
rkwong@universaldisplay.com, Universal Display Corporation, Ewing, New Jersey, United States
Michael S. Weaver
Affiliation:
mweaver@universaldisplay.com, Universal Display Corporation, Ewing, New Jersey, United States
Julie J. Brown
Affiliation:
jjbrown@universaldisplay.com, Universal Display Corporation, Ewing, New Jersey, United States
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Abstract

White OLEDs (WOLEDTMs) fabricated using energy efficient phosphorescent OLED (PHOLEDTM) technology open up exciting new ways to develop efficient white lighting. WOLEDs have the potential to transform the lighting industry. In this presentation, phosphorescent WOLEDs with high conductivity transport layers will be discussed. White light can be generated by partial energy transfer from blue to green and red. Single WOLED stacks are demonstrated that match the Energy Star® lighting color criteria for 2700K and 3000K with high efficiency (˜80 lm/W) and high color rendering indices (˜80). Both devices had operational lifetimes (LT70%) over 30,000 hours measured from an initial luminance of 1,000 cd/m2. Different techniques to improve optical outcoupling will also be discussed.

Keywords

devicesenvironmentally benignoptoelectronic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1212: Symposium S – Organic Materials and Devices for Sustainable Energy Systems , 2009 , 1212-S02-01
Copyright
Copyright © Materials Research Society 2010

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