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

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    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
    Pages (from-to)H1067-H1070
    JournalJournal of the Electrochemical Society
    Volume157
    Issue number11
    DOIs
    Publication statusPublished - 2010

    ASJC Scopus subject areas

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

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