Phosphorescent phosphor

Details Phosphorescent phosphor Phosphorescent phosphor

1995-10-18

1997-11-11

Bonner, Melissa

Compositions

Preservative agents

Anti-corrosion

C09K 1180

Patent

active

056860226

ABSTRACT:
A phosphorescent phosphor comprising a matrix expressed by M.sub.1-x Al.sub.2 O.sub.4-x (except X=0) in which M is at least one metal element selected from a group consisting of calcium, strontium and barium. X is in a range -0.33.ltoreq..times..ltoreq.0.60 (except x=0). Europium is doped to said matrix as an activator and at least one element selected from a group consisting of lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium is doped to said matrix as a co-activator. Magnesium is doped to M.

REFERENCES:
patent: 5424006 (1995-06-01), Murayama et al.
Abbruscato, "Optical and Electrical Properties of SrAl.sub.2 O.sub. :Eu.sup.2+ ", J. Electrochem. Soc.:Solid State Science, vol. 118(6), Jun. 1971, pp. 930-932.

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