Development of phosphor-free white and multi-color light-emitting diodes

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  • FUNATO Mitsuru
    Department of Electronic Science and Engineering, Kyoto University
  • KAWAKAMI Yoichi
    Department of Electronic Science and Engineering, Kyoto University

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Other Title
  • 蛍光体フリー白色・多色発光ダイオードの開発
  • ケイコウタイ フリー ハクショク タショク ハッコウ ダイオード ノ カイハツ

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Abstract

<p>Phosphor-free white and multi-color light-emitting diodes (LEDs) have been developed. When LEDs with InGaN active layers are fabricated on nitride-semiconductor based three dimensional microstructures, the emission color depends on the crystal orientation of the facet planes composing the microstructures. Additive color mixture of the emissions from those microfacet LEDs realizes white and pastel colors. Furthermore, it is experimentally demonstrated that pulse-current operation of this new type of LED enables the emission color to be controlled externally.</p>

Journal

  • Oyo Buturi

    Oyo Buturi 80 (4), 309-313, 2011-04-10

    The Japan Society of Applied Physics

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