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Proceedings Paper

Optical properties of a SiO2 photonic crystal layer fabricated by seeded growth of spherical nanoparticles
Author(s): Dong C. Shin; Myung S. Kim; Yong Taeg O; Sang Jin Hong; Beom Gyu Lee
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Paper Abstract

The photonic band gap of self-assembled thin film could be controlled precisely in this study using the seeded growth of spherical SiO2 nanoparticles. The monodispersed SiO2 nanoparticles were fabricated using the Stober process. The nanoparticle with the narrowest particle size distribution was used as the nucleation seed. The particle size could be controlled to between 50 nm and 1000 nm using the Stober process and seeded growth methods. When the seed content exceeded 0.1 wt% in solution, no new particles were observed and narrow size distribution was thus obtained. A self-assembled thin film was prepared on a glass substrate by evaporation with capillary extraction. A linear relationship was observed between the average particle size and the photonic band gap according to the transmittance and reflectance measurements. The variation of photonic band gap was well matched with the theoretical consideration of Bragg's diffraction law.

Paper Details

Date Published: 13 April 2005
PDF: 6 pages
Proc. SPIE 5733, Photonic Crystal Materials and Devices III, (13 April 2005); doi: 10.1117/12.588069
Show Author Affiliations
Dong C. Shin, Chosun Univ. (South Korea)
Myung S. Kim, Chosun Univ. (South Korea)
Yong Taeg O, Chosun Univ. (South Korea)
Sang Jin Hong, Chosun Univ. (South Korea)
Beom Gyu Lee, Chosun Univ. (South Korea)

Published in SPIE Proceedings Vol. 5733:
Photonic Crystal Materials and Devices III
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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