High extraction efficiency of photonic crystal microcavity GaN based light emitting diode

  • Cho, Min-Su (Dept. of Electrical and Computer Engineering, Pohang University of Science and Technology) ;
  • Moon, Ki-Won (Dept. of Electrical and Computer Engineering, Pohang University of Science and Technology) ;
  • Han, Hae-Wook (Dept. of Electrical and Computer Engineering, Pohang University of Science and Technology) ;
  • Yoon, Ji-Su (Advanced Development Gr. 6, LG. Philips LCD) ;
  • Jeong, Byoung-Koan (Advanced Development Gr. 6, LG. Philips LCD) ;
  • Shin, Jong-Keun (Advanced Development Gr. 6, LG. Philips LCD) ;
  • Chung, In-Jae (Advanced Development Gr. 6, LG. Philips LCD)
  • Published : 2007.08.27

Abstract

We have demonstrated that the light extraction efficiency of GaN based light emitting diodes (LEDs) can be significantly enhanced by using photonic crystal and microcavity (PCMC) effects. It was found that the extraction efficiency of the PCMC-LEDs is 9.5 times larger than that of the normal LEDs.

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