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Journal of Photonics for Energy

High-performance phosphorescent white-stacked organic light-emitting devices for solid-state lighting
Author(s): Vadim I. Adamovich; Peter A. Levermore; Xin Xu; Alexey B. Dyatkin; Zeinab Elshenawy; Michael S. Weaver; Julie J. Brown
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Paper Abstract

In this work we report exceptional efficacy, lifetime and color stability for all-phosphorescent white stacked organic light-emitting devices (SOLED®s). We report data for all-phosphorescent white SOLED pixels with two emissive units connected in series by a charge generation layer (CGL). At 3,000  cd/m2, efficacy = 54 to 56  lm/W and lifetime to 70% of initial luminance LT70 ≈ 20,000  h, with color rendering index (CRI) = 82 to 83 and chromaticity meeting Energy Star criteria. We further report data for a 15  cm×15  cm white SOLED panel that operates at 3,000  cd/m2 with 48  lm/W efficacy, CRI = 86 and chromaticity meeting Energy Star criteria. The panel has extremely low operating temperature that is only 6.4°C above ambient, and exceptional lifetime of LT70 ≈ 13,000  h when operated at 3,000  cd/m2.

Paper Details

Date Published: 12 March 2012
PDF: 9 pages
J. Photon. Energy. 2(1) 021202 doi: 10.1117/1.JPE.2.021202
Published in: Journal of Photonics for Energy Volume 2, Issue 1
Show Author Affiliations
Vadim I. Adamovich, Universal Display Corp. (United States)
Peter A. Levermore, Universal Display Corp. (United States)
Xin Xu, Universal Display Corp. (United States)
Alexey B. Dyatkin, Universal Display Corp. (United States)
Zeinab Elshenawy, Universal Display Corp. (United States)
Michael S. Weaver, Universal Display Corp. (United States)
Julie J. Brown, Universal Display Corp. (United States)

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