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Centre National De La Recherche Scientifique

Linxens Holding

Université Clermont Auvergne

Sigma Clermont

Rodolphe Deloncle

Geneviève Chadeyron

Jérôme Deschamps

Anthony Barros

Damien Boyer

Philippe Boutinaud

Genevieve Chadeyron

Jerome Deschamps

A sol-gel process for synthesizing a luminescent material has a general formulation: AxByFz:Mn. A is an element of group 1, 2, 4, NRor a combination of elements belonging to those groups, with R&#x2550;H or an alkyl chain or a combination of chains. B is an element of group 5, 6, 13, 14 and 0&#x3c;x&#x2264;5, 0&#x3c;y&#x2264;2, 5&#x2264;z&#x2264;7. The sol-gel process includes a) producing a liquid precursor () in an alcohol solution by mixing metal reagents () with manganese, the mixture being made at pH&#x3c;8; b) obtaining a solid precursor () from the liquid precursor () obtained in step a), by eliminating () the solvent; c) crystallizing () the solid precursor () obtained in step b) by thermal treatment in fluorinated atmosphere; and d) retrieving the fluorescent crystalline powder () obtained at an end of step c).

Sol-gel process for synthesising a luminescent material with general formulation: AxByFz:Mn

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Le Cendre, France

Rodolphe Deloncle