12 March 2012 High-performance phosphorescent white-stacked organic light-emitting devices for solid-state lighting
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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.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
Vadim I. Adamovich, Peter A. Levermore, Xin Xu, Alexey B. Dyatkin, Zeinab Elshenawy, Michael S. Weaver, Julie J. Brown, "High-performance phosphorescent white-stacked organic light-emitting devices for solid-state lighting," Journal of Photonics for Energy 2(1), 021202 (12 March 2012). https://doi.org/10.1117/1.JPE.2.021202 . Submission:
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