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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 23 — Nov. 10, 2008
  • pp: 18933–18941

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

B. Guilhabert, D. Elfström, A. J. C. Kuehne, D. Massoubre, H. X. Zhang, S. R. Jin, A. R. Mackintosh, E. Gu, R. A. Pethrick, and M. D. Dawson  »View Author Affiliations


Optics Express, Vol. 16, Issue 23, pp. 18933-18941 (2008)
http://dx.doi.org/10.1364/OE.16.018933


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Abstract

We report on the integration of monodisperse semiconductor nanocrystal (NC) color converters onto gallium nitride ultraviolet micro-pixelated 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.

© 2008 Optical Society of America

OCIS Codes
(160.5470) Materials : Polymers
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.3670) Optical devices : Light-emitting diodes
(230.3990) Optical devices : Micro-optical devices
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices

ToC Category:
Optoelectronics

History
Original Manuscript: August 14, 2008
Revised Manuscript: October 9, 2008
Manuscript Accepted: October 14, 2008
Published: November 3, 2008

Citation
B. Guilhabert, D. Elfström, A. Kuehne, D. Massoubre, H. X. Zhang, S. R. Jin, A. R. Mackintosh, E. Gu, R. Pethrick, and M. D. Dawson, "Integration by self-aligned writing of nanocrystal/epoxy composites on InGaN micro-pixelated light-emitting diodes," Opt. Express 16, 18933-18941 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-23-18933


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