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Hybrid organic/nitride microstructured light-emitting diodes

Gu, E. and Guilhabert, B.J.E. and Elfstrom, D. and Gong, Z. and Zhang, H.X. and Dawson, M.D. and Mackintosh, A.R. and Kuhne, A. and Pethrick, R.A. and Belton, C. and Bradley, D.D.C. (2007) Hybrid organic/nitride microstructured light-emitting diodes. In: 7th International Conference of Nitride Semiconductors, 2007-09-16 - 2007-09-21. (Unpublished)

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Hybrid organic/nitride optoelectronic devices will take full advantage of the optical and electronic properties of both organic and nitride materials. The significant benefits of integrating organic optoelectronic materials such as light-emitting polymers (LEPs) with nitride light-emitting diodes (LEDs) have been identified recently. However, due to their high chemical sensitivity, fabricating polymer microstructures and integrating them with nitride LEDs present a considerable technical challenge. In this work, several approaches for fabricating organic functional polymer microstructures on AlInGaNbased micro-structured LEDs have been developed, including self-aligned direct writing, ultraviolet laser writing and lithographic patterning. It is shown that the fabricated organic/nitride micro-structured LED devices have well defined microstructures and exhibit novel functionalities. Colour downconverted visible emission from these hybrid electroluminescent microstructured LEDs has been achieved. These hybrid LEDs offer a promising route to development of a range of low-cost and highly efficient micro-light sources.