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

Research output: Contribution to journalArticle

12 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.
LanguageEnglish
Pages18933
JournalOptics Express
Volume16
DOIs
Publication statusPublished - 3 Nov 2008

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diodes
color
spectral emission
composite materials
gallium nitrides
converters
radiant flux density
nanocomposites
chips
output
polymers

Keywords

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

Cite this

Guilhabert, B.J.E. ; Elfstrom, D. ; Kuehne, A.J. ; Massoubre, D. ; Zhang, H.X. ; Jin, S.R. ; Mackintosh, A.R. ; Gu, E. ; Pethrick, R.A. ; Dawson, M.D. / Integration by self-aligned writing of nanocrystal/epoxy composites on InGaN micropixelated light-emitting diodes. In: Optics Express. 2008 ; Vol. 16. pp. 18933.
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Integration by self-aligned writing of nanocrystal/epoxy composites on InGaN micropixelated light-emitting diodes. / Guilhabert, B.J.E.; Elfstrom, D.; Kuehne, A.J.; Massoubre, D.; Zhang, H.X.; Jin, S.R.; Mackintosh, A.R.; Gu, E.; Pethrick, R.A.; Dawson, M.D.

In: Optics Express, Vol. 16, 03.11.2008, p. 18933.

Research output: Contribution to journalArticle

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AU - Guilhabert, B.J.E.

AU - Elfstrom, D.

AU - Kuehne, A.J.

AU - Massoubre, D.

AU - Zhang, H.X.

AU - Jin, S.R.

AU - Mackintosh, A.R.

AU - Gu, E.

AU - Pethrick, R.A.

AU - Dawson, M.D.

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Y1 - 2008/11/3

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AB - 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.

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