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Proceedings Paper

Surface patterning for light extraction in luminescent sol-gel films
Author(s): A. Revaux; G. Dantelle; L. Devys; H. Benisty; T. Gacoin; J. P. Boilot
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Paper Abstract

We report here a method to enhance light extraction from the top face of a TiO2 waveguide doped with a molecular emitter. Sol-gel TiO2 surface is patterned by a 2D photonic crystal with a 400-nm period and a 40-nm depth, as verified by Scanning Electron Microscopy and Atomic Force Microscopy. We evidence that light emitted in the TiO2 layer is efficiently extracted by the surface patterning and quantify the extraction enhancement by measuring the emission spectra as a function of the emission angle. We measured an enhancement factor of 3 within 50° off normal.

Paper Details

Date Published: 7 September 2011
PDF: 7 pages
Proc. SPIE 8094, Nanophotonic Materials VIII, 80940B (7 September 2011); doi: 10.1117/12.892712
Show Author Affiliations
A. Revaux, Lab. de Physique de la Matière Condensée, CNRS, Ecole Polytechnique (France)
G. Dantelle, Lab. de Physique de la Matière Condensée, CNRS, Ecole Polytechnique (France)
L. Devys, Lab. de Physique de la Matière Condensée, CNRS, Ecole Polytechnique (France)
H. Benisty, Lab. Charles Fabry, Institut d'Optique, CNRS, Univ. Paris Sud 11 (France)
T. Gacoin, Lab. de Physique de la Matière Condensée, CNRS, Ecole Polytechnique (France)
J. P. Boilot, Lab. de Physique de la Matière Condensée, CNRS, Ecole Polytechnique (France)


Published in SPIE Proceedings Vol. 8094:
Nanophotonic Materials VIII
Stefano Cabrini; Taleb Mokari, Editor(s)

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