Aluminate phosphor containing bivalence metal elements, its...

Details Aluminate phosphor containing bivalence metal elements, its... Aluminate phosphor containing bivalence metal elements, its...

2009-05-13

2010-12-14

Koslow, C. Melissa (Department: 1793)

Compositions

Inorganic luminescent compositions

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

C252S30140H, C313S503000, C257S098000

Reexamination Certificate

active

07850869

ABSTRACT:
A phosphor can be excited by UV, purple or blue light LED, its production and the light emitting devices. The general formula of the phosphor is LnaMb(O,F)12:(R3+,M′2+)x, wherein, Ln is at least one metal element selected from a group consisting of Sc, Y, La, Pr, Nd, Gd, Ho, Yb and Sm, 2.6≦a≦3.4; M is at least one element selected from a group consisting of B, Al and Ga, 4.5≦b≦5.5; R is at least one metal element selected from a group consisting of Ce and Tb; M′ is at least one metal element selected from a group consisting of Ca, Sr, Ba, Mn and Zn, 0.001≦x≦0.4. The phosphor possesses broad emitting range, high efficiency, better uniformity and stability. A light emitting device can be obtained by incorporating this phosphor into a UV, purple or blue light emitting device.

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Translation for JP 49-20097, Feb. 1974.
Zhang Shusheng, et al., “Influence of Flux on Properties of Y3Al5O12: Ce Phosphor, ” Journal of the Chinese Rare Earth Society, vol. 20, No. 6, Dec. 2002, pp. 605-607.
Kang Kai, et al., “Study on Effect of flux on CeMgAl11O19: Tb3+Phosphor,” Journal of Rare Earths, vol. 22, No. 1, Feb. 2004, pp. 114-117.
International Search Report for International Application PCT/CN2007/003205, mailed Feb. 28, 2008.

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