A R Mackintosh et al 2008 J. Phys. D: Appl. Phys. 41 094007 doi:10.1088/0022-3727/41/9/094007
A R Mackintosh1, A J C Kuehne1, R A Pethrick1, B Guilhabert2, E Gu2, C L Lee2, M D Dawson2, G Heliotis3 and D D C Bradley3
Show affiliationsWe report for the first time a UV curable polymer with effective optical transmission below 300 nm. Through careful control of kinetics, various viscosities can be generated to optimize the film forming properties via spin coating. The transmission of the monomers and films is investigated over a spectral range which spans the 240–370 nm output of ultraviolet AlInGaN light-emitting diodes. The refractive index of the polymer has been measured by ellipsometry to give a value of 1.57 at 280 nm. Using standard lithography techniques with reactive ion etching, arrays of microlenses have been fabricated in this polymer with diameters of 30 µm and below and are characterized by atomic force microscopy and confocal microscopy.
85.60.Jb Light-emitting devices
42.79.Bh Lenses, prisms and mirrors
Issue 9 (7 May 2008)
Received 28 September 2007, in final form 21 November 2007
Published 4 April 2008
A R Mackintosh et al 2008 J. Phys. D: Appl. Phys. 41 094007
C R Belton et al 2008 J. Phys. D: Appl. Phys. 41 094006
B Guilhabert et al 2008 J. Phys. D: Appl. Phys. 41 094008
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