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Article Dans Une Revue Journal of Alloys and Compounds Année : 2023

Doped sol-gel based microstructured layers to improve the light emission of luminescent coatings

Résumé

Sol-gel based layers doped with Rhodamine B phosphors (RB) were directly microstructured to produce sub-lambda 2D gratings, using nanoimprint lithography. Such an approach enables the simplification of technological processes, since no further etching process is required, which reduces considerably the number of technological steps and thus production costs. Surface microstructuring improved fluorophore emission in the visible range. Demonstrations were performed experimentally and samples were characterized using angle-resolved fluorescence. The emissions measured on microstructured luminescent coatings were 3–4 times higher, depending on the angle of observation, than those recorded on flat surfaces. This technological approach is very promising for the next generation of low-cost, high-performance anti-counterfeiting marking processes and for the traceability of objects based on unique optical effects
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Dates et versions

hal-04093898 , version 1 (14-06-2023)

Identifiants

Citer

Léa Marichez, Geneviève Chadeyron, Daniel Zambon, François Réveret, Audrey Potdevin, et al.. Doped sol-gel based microstructured layers to improve the light emission of luminescent coatings. Journal of Alloys and Compounds, 2023, 957, pp.170408. ⟨10.1016/j.jallcom.2023.170408⟩. ⟨hal-04093898⟩
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