Phosphorescent phosphor

Details Phosphorescent phosphor Phosphorescent phosphor

1994-02-25

1995-06-13

Bell, Mark L.

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

C09K 1180

Patent

active

054240069

ABSTRACT:
A phosphorescent phosphor according to the present invention includes a matrix expressed by MAl.sub.2 O.sub.4 in which M is at least one metal element selected from a group consisting of calcium, strontium and barium. Alternatively, a phosphorescent phosphor according to the present invention includes a matrix expressed by MAl.sub.2 O.sub.4 in which M is plural metal elements which are composed of magnesium and at least one metal element selected from a group consisting of calcium, strontium and barium and europium is added as an activator, further, co-activator is added.

REFERENCES:
patent: 3294699 (1966-12-01), Lange
patent: 3502592 (1970-03-01), Amster
patent: 3595802 (1971-07-01), Blasse

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