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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 19 — Sep. 14, 2009
  • pp: 16436–16443

Hybrid GaN/organic microstructured light-emitting devices via ink-jet printing

M. Wu, Z. Gong, A.J.C. Kuehne, A.L. Kanibolotsky, Y.J. Chen, I.F. Perepichka, A.R. Mackintosh, E. Gu, P.J. Skabara, R.A. Pethrick, and M.D. Dawson  »View Author Affiliations

Optics Express, Vol. 17, Issue 19, pp. 16436-16443 (2009)

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We report what we believe to be the first use of organic nanostructures for efficient colour conversion of gallium nitride light emitting diodes (LEDs). The particular nanomaterials, based on star-shaped truxene oligofluorenes, offer an attractive alternative to inorganic colloidal quantum dots in the search for novel and functional ‘nanophosphors’. The truxenes have been formed into a composite with photoresist and ink-jet printed onto microstructured gallium nitride LEDs, resulting in a demonstrator hybrid microdisplay technology with pixel size ~32µm. The output power density of the hybrid device was measured to be ~8.4mW/cm2 per pixel at driving current density of 870.8A/cm2 and the efficiency of colour conversion at drive current of 7mA was estimated to be approximately 50%.

© 2009 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
(130.7405) Integrated optics : Wavelength conversion devices

ToC Category:
Optical Devices

Original Manuscript: June 18, 2009
Revised Manuscript: July 24, 2009
Manuscript Accepted: July 25, 2009
Published: August 31, 2009

M. Wu, Z. Gong, A. J. Kuehne, A. L. Kanibolotsky, Y. J. Chen, I. F. Perepichka, A. R. Mackintosh, E. Gu, P. J. Skabara, R. A. Pethrick, and M. D. Dawson, "Hybrid GaN/organic microstructured light-emitting devices via ink-jet printing," Opt. Express 17, 16436-16443 (2009)

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