JSTS:Journal of Semiconductor Technology and Science

The Institute of Electronics and Information Engineers (대한전자공학회)
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Finite Element Study on the Micro-cavity Effect in OLED Devices

  • Lee, Hyeongi (Department of Electrical Engineering, Inha University) ;
  • Hwang, Youngwook (Department of Electrical Engineering, Inha University) ;
  • Won, Taeyoung (Department of Electrical Engineering, Inha University)
  • Received : 2013.08.23
  • Accepted : 2013.11.27
  • Published : 2014.02.28
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Abstract

In this paper, we discuss on the optimal design scheme of the bilayer OLED (Organic Light Emitting Diodes) with micro-cavity structure. We carried out the optical simulation on the OLED device and calculated optimal scale of devices with taking the micro-cavity effect into account. Our emission model is based upon an ensemble of radiating dipole antennas. Consequently, we applied Maxwell's equation to this sequence, followed by the analysis on the electrical behaviors of OLED device using Poisson's equation. It contains carrier injection and transportation mechanism. In this process, we found out the thickness of each layer can affect the recombination rate at the emission layer. Therefore, we optimized the thickness of each layer to improve the efficiency of the device.

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References

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