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http://dx.doi.org/10.4313/JKEM.2014.27.9.571

Improvement of Efficiency Varying Ratio in Hybrid White OLED  

Kim, Nam-Kyu (Department of Nano Engineering, Dong-A University)
Shin, Hoon-Kyu (National Institute for Nanomaterials Technology, Pohang University of Science and Technology)
Kwon, Young-Soo (Department of Nano Engineering, Dong-A University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.27, no.9, 2014 , pp. 571-575 More about this Journal
Abstract
We synthesized new materials of $Zn(HPB)_2$ and Ir-complexes as blue or red emitting material. We fabricated white Organic Light Emitting Diodes (OLED) by using $Zn(HPB)_2$ for the blue emitting layer, Ir-complexes for the red emitting layer and $Alq_3$ for the green emitting layer. We fabricated white OLED by using double emitting layers of $Zn(HPB)_2$:Ir-complexes and $Alq_3$. The doping rate of Ir-complexes was varied, such as 0.2%, 0.4%, 0.6%, and 0.8%, respectively. When the doping rate of $Zn(HPB)_2$:Ir-complexes was 0.6%, white emission was achieved. The Commission Internationale de l'Eclairage (CIE) coordinates of the white emission was (0.322, 0.312).
Keywords
White OLED; Zn-complexes; Ir-complexes; CIE; Color purity;
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