Direct indium tin oxide nanoparticle printing technique for improvement of light extraction efficiency of GaN-based LEDs

Ki Yeon Yang, Sang Chul Oh, Joong Yeon Cho, Kyeong Jae Byeon, Heon Lee

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15 Citations (Scopus)


To enhance the light extraction efficiency of the GaN-based light emitting diode (LED), indium tin oxide (ITO) nanoparticle photonic crystal patterns are fabricated on the surface of the GaN-based blue LED device using the direct printing technique of the ITO nanoparticles. According to electroluminescence (EL) measurements, the EL intensity of the GaN-based blue LED with photonic crystal patterns is 28% higher than an identical LED without photonic crystal patterns. Printing the ITO nanoparticles eliminates the need for a plasma etching process of the ITO layer so that the current-voltage characteristics do not degrade.

Original languageEnglish
JournalJournal of the Electrochemical Society
Issue number11
Publication statusPublished - 2010 Oct 13


ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

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