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Proceedings Paper

Crystallization of silica opals onto patterned silicon wafer
Author(s): Jianhui Ye; Rudolf Zentel; Sanna Arpiainen; Jouni Ahopelto; Fredrik Jonsson; Sergei G. Romanov; Clivia Sotomayor Torres
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Paper Abstract

We report on fabrication of high quality opaline photonic crystals from large silica spheres, self-assembled in hydrophilic trenches of silicon wafers by using a drawing apparatus with a combination of stirring. The achievements here reported comprise a spatial selectivity of opal crystallization without special treatment of the wafer surface, a filling of the trenches up to the top, leading to a spatially uniform film thickness, particularly an absence of cracks within the size of the trenches, and finally a good three-dimensional order of the opal lattice even in trenches with a complex confined geometry, verified using optical measurements. The opal lattice was found to match the pattern precisely in width as well as depth, providing an important step towards applications of opals in integrated optics. The influence of substrate structure on crystallization is also discussed.

Paper Details

Date Published: 18 April 2006
PDF: 9 pages
Proc. SPIE 6182, Photonic Crystal Materials and Devices III (i.e. V), 61821U (18 April 2006); doi: 10.1117/12.661660
Show Author Affiliations
Jianhui Ye, Univ. of Mainz (Germany)
Rudolf Zentel, Univ. of Mainz (Germany)
Sanna Arpiainen, VTT Ctr. for Microelectronics (Finland)
Jouni Ahopelto, VTT Ctr. for Microelectronics (Finland)
Fredrik Jonsson, Tyndall National Institute, Univ. College Cork (Ireland)
Sergei G. Romanov, Tyndall National Institute, Univ. College Cork (Ireland)
Clivia Sotomayor Torres, Tyndall National Institute, Univ. College Cork (Ireland)

Published in SPIE Proceedings Vol. 6182:
Photonic Crystal Materials and Devices III (i.e. V)
Richard M. De La Rue; Pierre Viktorovitch; Ceferino Lopez; Michele Midrio, Editor(s)

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