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Issue 31, 2010
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TiO2–SiO2 one-dimensional photonic crystals of controlled porosity by glancing angle physical vapour deposition

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Abstract

Herein we present a synthetic route to attain porous one-dimensional photonic crystals of high optical quality. The method employed, based on the alternate deposition of TiO2 and SiO2 porous layers by glancing angle physical vapour deposition, yields a highly accessible interconnected pore network throughout the entire multilayer structure. Furthermore, it allows a strict control over the average size and density of the interstitial sites, which results in the precise tuning of the refractive index of the individual layers and thus of the optical response of the ensemble. The controlled environmental response of the multilayer is confirmed by the optical monitoring of the infiltration of liquids of different refractive index.

Graphical abstract: TiO2–SiO2 one-dimensional photonic crystals of controlled porosity by glancing angle physical vapour deposition

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Supplementary files

Article information


Submitted
12 Mar 2010
Accepted
11 Jun 2010
First published
24 Jun 2010

J. Mater. Chem., 2010,20, 6408-6412
Article type
Communication

TiO2–SiO2 one-dimensional photonic crystals of controlled porosity by glancing angle physical vapour deposition

L. González-García, G. Lozano, A. Barranco, H. Míguez and A. R. González-Elipe, J. Mater. Chem., 2010, 20, 6408
DOI: 10.1039/C0JM00680G

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