An ambipolar phosphine oxide-based host for high power efficiency blue phosphorescent organic light emitting devices

2009 ◽  
Vol 94 (22) ◽  
pp. 223304 ◽  
Author(s):  
Evgueni Polikarpov ◽  
James S. Swensen ◽  
Neetu Chopra ◽  
Franky So ◽  
Asanga B. Padmaperuma
Keyword(s):  
Phosphine Oxide ◽  
High Power ◽  
Power Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices ◽  
Blue Phosphorescent ◽  
High Power Efficiency

scholarly journals Tailoring the Spectra of White Organic Light-Emitting Devices by Trap Effect of a Concentration-Insensitive Dopant

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Qi Wang ◽  
Junsheng Yu ◽  
Ming Li ◽  
Zhiyun Lu
Keyword(s):  
High Power ◽  
Power Efficiency ◽  
High Performance ◽  
Iridium Complex ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices ◽  
Doping Ratio ◽  
High Power Efficiency

Highly efficient phosphorescent organic light-emitting devices (PhOLEDs) had been fabricated by using a novel iridium complex, bis[2-(3′,5′-di-tert-butylbiphenyl-4-yl)benzothiazolato-N,C2′]iridium(III) (acetylacetonate) [(tbpbt)2Ir(acac)], as the emitter. With a wide doping ratio ranging from 15 wt% to 25 wt%, the PhOLEDs maintained a comparable high performance, indicating concentration-insensitive property of the (tbpbt)2Ir(acac). On the basis of the unique characteristic of concentration insensitivity, the application of this phosphor was explored by fabricating white organic light-emitting devices (WOLEDs) with altered doping ratio, indicating that trap effect of (tbpbt)2Ir(acac) could effectively tailor WOLEDs spectra. Typically, a high-power efficiency, current efficiency, and external quantum efficiency of 30.0 lm/W, 38.8 cd/A, 18.1%, were achieved by 20 wt% doped WOLEDs.

White p-i-n organic light-emitting devices with high power efficiency and stable color

2007 ◽  
Vol 91 (11) ◽  
pp. 113518 ◽  
Author(s):  
Meng-Huan Ho ◽  
Shih-Feng Hsu ◽  
Jia-Wei Ma ◽  
Shiao-Wen Hwang ◽  
Pu-Cheng Yeh ◽  
...  
Keyword(s):  
High Power ◽  
Power Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices ◽  
High Power Efficiency
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