Phosphorescent organic light-emitting diodes for high-efficacy long-lifetime solid-state lighting

Peter A. Levermore; Alexey B. Dyatkin; Zeinab Elshenawy; Huiqing Pang; Jeffrey A. Silvernail; Emory Krall; Raymond C. Kwong; Ruiqing Ma; Michael S. Weaver; Julie J. Brown; Xiangfei Qi; Stephen R. Forrest

doi:10.1117/1.JPE.2.021205

26 March 2012 Phosphorescent organic light-emitting diodes for high-efficacy long-lifetime solid-state lighting

Peter A. Levermore, Alexey B. Dyatkin, Zeinab Elshenawy, Huiqing Pang, Jeffrey A. Silvernail, Emory Krall, Raymond C. Kwong, Ruiqing Ma, Michael S. Weaver, Julie J. Brown, Xiangfei Qi, Stephen R. Forrest

Author Affiliations +

Journal of Photonics for Energy, Vol. 2, Issue 1, 021205 (March 2012). https://doi.org/10.1117/1.JPE.2.021205

Abstract

We report data for a pair of singlestack all-phosphorescent 15×15 cm² organic light emitting-diode (OLED) light panels with high efficacy, long lifetime, and very low operating temperature: Panel 1 has 62 lm/W efficacy, CRI = 81 and lifetime to LT70 = 18,000 h at 1000 cd/m2, while Panel 2 has 58 lm/W efficacy, CRI = 82 and lifetime to LT70 = 30,000 h at 1000 cd/m². Operating at a higher luminance of 3000 cd/m2, Panel 2 has 49 lm/W efficacy with lifetime to LT70 = 4000 h. Excellent panel lifetime is enabled by a stable light blue phosphorescent materials system. Panel temperatures are within 10°C of ambient temperature at 3000 cd/m². Panel 2 was further used as a building block to demonstrate an all-phosphorescent OLED luminaire for under-cabinet lighting applications. Operating at approximately 3000 cd/m², the luminaire delivers 570 lm with 52 lm/W total system efficacy, CRI = 86 and CCT = 2940 K.

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Peter A. Levermore, Alexey B. Dyatkin, Zeinab Elshenawy, Huiqing Pang, Jeffrey A. Silvernail, Emory Krall, Raymond C. Kwong, Ruiqing Ma, Michael S. Weaver, Julie J. Brown, Xiangfei Qi, and Stephen R. Forrest "Phosphorescent organic light-emitting diodes for high-efficacy long-lifetime solid-state lighting," Journal of Photonics for Energy 2(1), 021205 (26 March 2012). https://doi.org/10.1117/1.JPE.2.021205

Published: 26 March 2012

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