Integration by self-aligned writing of nanocrystal/epoxy composites on InGaN micropixelated light-emitting diodes

B.J.E. Guilhabert, D. Elfstrom, A.J. Kuehne, D. Massoubre, H.X. Zhang, S.R. Jin, A.R. Mackintosh, E. Gu, R.A. Pethrick, M.D. Dawson

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15 Citations (Scopus)

Abstract

We report on the integration of monodisperse semiconductor nanocrystal (NC) color converters onto gallium nitride ultraviolet micropixelated light-emitting diodes ('micro-LEDs'). Integration is achieved in a 'self-aligned' process by forming a nanocomposite of the respective NCs in a photocurable epoxy polymer. Blue, green, yellow and red NC/epoxy blend microstructures have been successfully integrated onto micro-pixelated LEDs by this technique and utilised for color conversion, resulting in a five color emission single chip. Optical output power density of up to about 166mW/cm2 is measured; spectral emission at 609nm gives an estimated optical-to-optical conversion as high as 18.2% at 30mA driving current.
Original languageEnglish
Pages (from-to)18933
JournalOptics Express
Volume16
DOIs
Publication statusPublished - 3 Nov 2008

Keywords

  • nanocrystal
  • converters
  • gallium nitride
  • ultraviolet
  • micropixelated
  • polymer
  • optical

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