Phosphor and luminescent device
AssigneeChi Mei Corporation
InventorsYuan-Ren Juang, Jen-Shrong Uen
Life of this patent
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Abstract
A phosphor and a luminescent device are provided. The phosphor includes a composition represented by following formula (I): CapSrqMm—Aa—Bb—Ot—Nn:Eur (I) in the formula (I), M is selected from the group consisting of Mg and Ba; A is selected from the group consisting of Al, Ga, In, Sc, Y, La, Gd and Lu, and A includes at least Al; B is selected from the group consisting of Si, Ge, Sn, Ti, Zr and Hf, and B includes at least Si; O represents oxygen; N represents nitrogen; 0<p<1, 0<q<1, 0≦m<1, 0≦t≦0.3, 0.00001≦r≦0.1, a=1, 0.8≦b≦1.2, and 2.6≦n≦3.1. The phosphor also contains 10-500 ppm of molybdenum (Mo). Moreover, the luminescent device includes the phosphor containing the composition represented by the formula (I).
Claims17
A phosphor, comprising a composition represented by a formula (I):
- CapSrqMm—Aa—Bb—Ot—Nn:Eur (I)
- in the formula (I), M is one of selected from the group consisting of magnesium and barium;
- A is one of selected from the group consisting of aluminum, gallium, indium, scandium, yttrium, lanthanum, gadolinium and lutetium, and A includes at least Al;
- B is one of selected from the group consisting of silicon, germanium, tin, titanium, zirconium and hafnium, and B includes at least Si;
- O represents oxygen;
- N represents nitrogen;
- 0<p<1, 0<q<1, 0≦m<1, 0≦t≦0.3, 0.00001≦r≦0.1, a=1, 0.8≦b≦1.2, and 2.6≦n≦3.1;
- and
- the phosphor contains 10-500 ppm of molybdenum.
A luminescent device, comprising:
- a semiconductor light-emitting element;
- and
- a phosphor, comprising a composition represented by a formula (I):
- CapSrqMm—Aa—Bb—Ot—Nn:Eur (I)
- in the formula (I), M is one of selected from the group consisting of magnesium and barium;
- A is one of selected from the group consisting of aluminum, gallium, indium, scandium, yttrium, lanthanum, gadolinium and lutetium, and A includes at least Al;
- B is one of selected from the group consisting of silicon, germanium, tin, titanium, zirconium and hafnium, and B includes at least Si;
- O represents oxygen;
- N represents nitrogen;
- 0<p<1, 0<q<1, 0≦m<1, 0≦t≦0.3, 0.00001≦r≦0.1, a=1, 0.8≦b≦1.2, and 2.6≦n≦3.1;
- and the phosphor contains 10-500 ppm of molybdenum,
- wherein the phosphor emits a first light having a dominant wavelength when excited by a second light emitted from the semiconductor light-emitting element, and the dominant wavelength of the first light is different from that of the second light.
Dependencies are inferred from the claim text.