DENIS, Grégoire; DENIARD, Philippe; GAUTRON, Eric; CLABAU, Frédéric; GARCIA, Alain; JOBIC, Stéphane

doi:10.1021/ic702240q

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DENIS, Grégoire
Institut des Matériaux Jean Rouxel [IMN]

DENIARD, Philippe
Institut des Matériaux Jean Rouxel [IMN]

GAUTRON, Eric
Institut des Matériaux Jean Rouxel [IMN]

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Inorganic Chemistry. 2008, vol. 47, n° 10, p. 4226-4235

American Chemical Society

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The optical properties of Eu-activated (Ba,Sr)13−xAl22−2xSi10+2xO66 materials have been determined after the structural reinvestigation of the hypothetical Ba13Al22Si10O66 material on the basis of the Gebert's model. The white fluorescence and phosphorescence of the (Ba,Sr)13−xAl22−2xSi10+2xO66:Eu series result from the existence of two broad emission bands associated with 8H-4f65d1 → 8S-4f7 transitions peaking at 534 and 438 nm, the intensities of which may be tuned at room temperature via the control of the europium concentration and the substitution of Sr for Ba. This suggests the possibility to adjust the emission of the material to white LED requisites.< Leer menos

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