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Issue 34, 2015
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A polycrystalline SiO2 colloidal crystal film with ultra-narrow reflections

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Abstract

This work reported a high quality photonic crystal film with an ultra-narrow photonic bandgap obtained via a chemical synthetic route. The bandgap is much narrower than that of traditional colloidal crystals, which makes the film qualified for use in optical devices. The narrow PBG originates from not only the high crystallinity and uniform orientations of microcrystals within the film but also the very close refractive indices between the silica and the polymer matrix. Due to the matching of the refractive index, the amorphous contents of the film are optically transparent and do not interfere with the reflection, so that the photonic crystal film is tolerant of the existence of disordered contents.

Graphical abstract: A polycrystalline SiO2 colloidal crystal film with ultra-narrow reflections

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Publication details

The article was received on 13 Jan 2015, accepted on 23 Mar 2015 and first published on 23 Mar 2015


Article type: Communication
DOI: 10.1039/C5CC00324E
Citation: Chem. Commun., 2015,51, 7382-7385
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    A polycrystalline SiO2 colloidal crystal film with ultra-narrow reflections

    Q. Fu, A. Chen, L. Shi and J. Ge, Chem. Commun., 2015, 51, 7382
    DOI: 10.1039/C5CC00324E

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