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Issue 37, 2015
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Manipulation of the fluorescence of nanocrystals by opal-based heterostructures

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Abstract

Opal-based photonic crystals are promising materials to engineer complex heterostructures for efficient manipulation of nano-emitters fluorescence. We fabricated and characterized a structure composed of a layer of silica embedded between two silica opals. Thanks to this controlled planar defect which opens a permitted frequency band in the photonic stopband, an increase of emission, depending on angular distribution, is evidenced through photoluminescence spectroscopy. We discuss the use of such a structure as a self-assembled micrometer-sized spectroscopic device and demonstrate that it can be used to point the maximum emission wavelength of an unknown light source up to a certain linewidth. It can as well separate two sources, emitting at different wavelengths, with a resolution given by the Rayleigh criterion.

Graphical abstract: Manipulation of the fluorescence of nanocrystals by opal-based heterostructures

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Supplementary files

Article information


Submitted
19 Jun 2015
Accepted
10 Aug 2015
First published
13 Aug 2015

J. Mater. Chem. C, 2015,3, 9734-9739
Article type
Paper
Author version available

Manipulation of the fluorescence of nanocrystals by opal-based heterostructures

B. Céline, H. P. Ngoc, D. de Marcillac Willy, C. Laurent, M. Agnès and S. Catherine, J. Mater. Chem. C, 2015, 3, 9734 DOI: 10.1039/C5TC01829C

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