Narrow-band UVB-emitting phosphor

Details Narrow-band UVB-emitting phosphor Narrow-band UVB-emitting phosphor

2007-05-22

2007-05-22

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

C252S30140R

Reexamination Certificate

active

10907349

ABSTRACT:
A narrow-band UVB emitting phosphor is described wherein the phosphor has a preferred composition represented by the general formula (Y1-x-y-zGdxCeyPrz)MgB5O10where x has a value in a range from 0.02 to 0.80, y has a value in a range from 0.01 to 0.97, and z has a value in a range from greater than 0 to 0.05 and x+y+z<1. The phosphor has a narrow emission centered at about 312 nm when excited by radiation from a low-pressure mercury discharge.

REFERENCES:
patent: 4319161 (1982-03-01), Looye et al.
patent: 5132043 (1992-07-01), Deboer
patent: 5154852 (1992-10-01), Chau
patent: 5776368 (1998-07-01), Chau
patent: 6007741 (1999-12-01), Hunt, Jr. et al.
U.S. Appl. No. 10/907,350, filed Mar. 30, 2005, to Fan et al.

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