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http://dx.doi.org/10.5762/KAIS.2011.12.10.4590

Study on Color Shifting Mechanism for Organic Light Emitting Diode with Red Dopant-doped Emitting Layer  

Lee, Ho-Nyeon (Dept. of Display and Electronic Information Engineering, Soonchunhyang University)
Oh, Tae-Sik (Dept. of Information Display, Sun Moon University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.12, no.10, 2011 , pp. 4590-4599 More about this Journal
Abstract
The Color shift phenomenon is becoming a major degradation factor of the emitting color purity in the organic emitting diodes which is generating a plurality of colors. In this study, the basic structure of organic light emitting diode device is comprised of ITO/${\alpha}$-NPD/$Alq_3$:DCJTB[wt%]/$Alq_3$/Mg:Ag, we have carry out numerical simulation of the electric-optical characteristics in organic light emitting diode device to estimate the mechanism of color shift phenomenon. We have investigated the causes of the color shift through the change of DCJTB doping concentration ratio. As the result, we have confirmed that the changes of the recombination rate which generated by trapped electrons and holes is one of the major factors for the color shift phenomenon.
Keywords
White organic light emitting diodes(WOLEDs); Color shift; Recombination rate;
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Times Cited By KSCI : 2  (Citation Analysis)
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