Surface patterning for light extraction in luminescent sol-gel films

A. Revaux; G. Dantelle; L. Devys; H. Benisty; T. Gacoin; J. P. Boilot

doi:10.1117/12.892712

7 September 2011 Surface patterning for light extraction in luminescent sol-gel films

A. Revaux, G. Dantelle, L. Devys, H. Benisty, T. Gacoin, J. P. Boilot

Proceedings Volume 8094, Nanophotonic Materials VIII; 80940B (2011) https://doi.org/10.1117/12.892712
Event: SPIE NanoScience + Engineering, 2011, San Diego, California, United States

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.

Citation Download Citation

A. Revaux, G. Dantelle, L. Devys, H. Benisty, T. Gacoin, and J. P. Boilot "Surface patterning for light extraction in luminescent sol-gel films", Proc. SPIE 8094, Nanophotonic Materials VIII, 80940B (7 September 2011); https://doi.org/10.1117/12.892712

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