Highly efficient phosphor

Details Highly efficient phosphor Highly efficient phosphor

C - Chemistry, Metallurgy

09

K

C09K 11/77 (2006.01) H01J 17/49 (2006.01) H01L 33/00 (2006.01)

Patent

CA 2448529

The invention relates to a luminescent substance of the thiometallate class, preferably thiogallates. The thiometallate is prepared according to the formula (AS).w(B2S3), whereby A is at least a bivalent cation selected from the Ba group, either individually or in combination with Mg and/or Ca, B is at least a trivalent cation from the Al, Ga, Y group and the factor w can lie both in the range 0.8 <= w <= 0.98 and in the range 1.02 <= w <= 1.2.

L'invention concerne une substance fluorescente de la classe des thiométallates, de préférence des thiogallates. Le thiométallate est préparé selon la formule (AS)?.¿w(B2S3), dans laquelle A représente au moins un cation bivalent du groupe Ba, seul ou en combinaison avec Mg ou Ca, et B représente au moins un cation trivalent du groupe Al, Ga, Y. Le facteur w peut être compris dans la plage 0,8 <= w <= 0,98 comme dans la plage 1,02 <= w < 1,2.

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