Patent ID: 6436313
Filing Date: 2002-08-20
Classification: C09K

Abstract:
A luminescent material comprising a halophosphate phosphor which comprises a phosphate ion and at least one counter-ion selected from the group consisting of Ca, Ba, Mg, Sr, and Zn; said halophosphate phosphor being doped with Sb3+, Mn2+, and at least an additional ion species selected from the group consisting of:(a) a trivalent rare earth metal ion when said at least one counter-ion is at least Zn; (b) Tb3+ when said at least one counter-ion is selected from the group consisting of Ba, Mg, Sr, and Zn; (c) at least a trivalent rare earth ion selected from the group consisting of: (1) Sm3+, Yb3+, Tm3+, Ce3+, and Pr3+; (2) Eu3+ and at least one ion selected from the group consisting of Sm3+, Yb3+, Tm3+, Ce3+, and Pr3+; and (3) Tb3+ and at least one ion selected from the group consisting of Yb3+, Tm3+, Ce3+, and Pr3+when said counter-ion is an alkaline earth metal ion.