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

Wu, M. et al. (2009) Hybrid GaN/organic microstructured light-emitting devices via ink-jet printing. Optics Express, 17(19), pp. 16436-16443. (doi: 10.1364/OE.17.016436) (PMID:19770858)

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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%.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Skabara, Professor Peter
Authors: Wu, M., Gong, Z., Kuehne, A. J., Kanibolotsky, A. L., Chen, Y. J., Perepichka, I. F., Mackintosh, A. R., Gu, E., Skabara, P. J., Pethrick, R. A., and Dawson, M. D.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Optics Express
Publisher:Optical Society of America
ISSN (Online):1094-4087
Published Online:31 August 2009

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