Effect of different fluxes on the morphology of the LaPO4 : Ce, Tb phosphor

Frédéric Duault (1, 2, 3) , Michel Junker (1, 2, 3) , Philippe Grosseau (1, 2, 3) , Bernard Guilhot (1, 2, 3) , Philibert Iacconi (4) , Bernard Moine (5)

1 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
2 P2MC-ENSMSE - Département Poudres et Matériaux Multi-Composants
3 LPMG-EMSE - Laboratoire des Procédés en Milieux Granulaires
4 LPES EA1174 - Laboratoire de Physique Electronique des Solides
5 LPCML - Laboratoire de Physico-Chimie des Matériaux Luminescents

LaPO4:Ce, Tb (LaCeT) is a green phosphor used in fluorescent lamps and plasma display panels. In order to improve the fabrication process of this phosphor, different fluxes have been used. Their influence on the particles size and shape is described thanks to SEM analyses. Fluxes were found to control the morphology of particles : LaCeT particles, from spherical to parallelepiped-like shape, with suitable sizes, from 0.1 to 10 µm, have been synthesized. Furthermore the photoluminescence emission of the obtained powders has been checked, and it has been proved that the effect of the fluxes studied is not harmful to the LaCeT final optical properties.

Keywords: Phosphor; Morphology; Particles size; Shape; Control

Domains: Other

Frédéric Duault, Michel Junker, Philippe Grosseau, Bernard Guilhot, Philibert Iacconi, et al.. Effect of different fluxes on the morphology of the LaPO4 : Ce, Tb phosphor. Powder Technology, 2005, 154(2-3), pp.132-7. ⟨10.1016/j.powtec.2005.04.037⟩. ⟨hal-00008922⟩