Phosphor compositions and lighting apparatus thereof
View Patent ↗A phosphor composition is disclosed. A phosphor composition, comprises at least 10 atomic % bromine; silicon, germanium or combination thereof; oxygen; a metal M, wherein M comprises zinc (Zn), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), or combinations thereof; and an activator comprising europium. The phosphor composition is formed from combining carbonate or oxides of metal M, silicon oxide, and europium oxide; and then firing the combination. A lighting apparatus including the phosphor composition is also provided. The phosphor composition may be combined with an additional phosphor to generate white light.
1. A phosphor composition comprising a phase having a nominal formula M 5 Z 2 O 7 (Br 4-n X n ):A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; Z comprises germanium (Ge) or a combination of germanium (Ge) and silicon (Si); X is an additional halogen selected from the group consisting of fluorine (F), chlorine (Cl), iodine (I) and combinations thereof, and n is a number from 0 to 2; and A is an activator comprising europium.
2. The phosphor composition of claim 1 , wherein the composition comprises a phase having a nominal formula M 5 Z 2 O 7 Br 4 :A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; Z comprises germanium (Ge) or a combination of germanium (Ge) and silicon (Si); and the activator A is europium.
3. The phosphor composition of claim 1 , wherein the composition further comprises manganese, tin, chromium, bismuth, lead, antimony, lanthanide elements or combinations thereof.
4. The phosphor composition of claim 1 , wherein the composition comprises a phase having a nominal formula M 5 Ge 2 O 7 Br 4 :A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; and the activator A is europium.
5. A phosphor composition comprising a phase having a nominal formula M 3 ZO 4 (Br 2-n X n ):A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; Z comprises germanium (Ge) or a combination of germanium (Ge) and silicon (Si); X is an additional halogen selected from the group consisting of fluorine (F), chlorine (Cl), iodine (I), and combinations thereof, and n is a number from 0 to 1; and A is an activator comprising europium.
6. The phosphor composition of claim 5 , wherein the composition comprises a phase having a nominal formula M 3 ZO 4 Br 2 :A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; Z comprises germanium (Ge) or a combination of germanium (Ge) and silicon (Si); and the activator A is europium.
7. The phosphor composition of claim 5 , wherein the composition further comprises manganese, tin, chromium, bismuth, lead, antimony, lanthanide element or combinations thereof.
8. The phosphor composition of claim 5 , wherein the composition comprises a phase having a nominal formula M 3 GeO 4 Br 2 :A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; and the activator A is europium.
9. A phosphor composition comprising a phase having a nominal formula M 9 Z 3 O 12 (Br 2-n Xn) 3 :A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; Z is selected from the group consisting of silicon (Si), germanium (Ge) and combinations thereof; X is an additional halogen selected from the group consisting of fluorine (F), chlorine (Cl), iodine (I), and combinations thereof, and n is a number from 0 to 1; and A is an activator comprising europium.
10. The phosphor composition of claim 9 , wherein the composition comprises a phase having a nominal formula M 9 Z 3 O 12 Br 6 :A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; Z is selected from the group consisting of silicon (Si), germanium (Ge) and combinations thereof; and the activator A is europium.
11. The phosphor composition of claim 9 , wherein the composition further comprises manganese, tin, chromium, bismuth, lead, antimony, lanthanide element or combinations thereof.
12. The phosphor composition of claim 9 , wherein the composition comprises a phase having a nominal formula M 9 Si 3 O 12 Br 6 :A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; and the activator A is europium.
13. A phosphor composition, comprising: a phase having nominal formula M 5 Z 2 O 7 (Br 4-n X n ):A, a phase having nominal formula M 3 ZO 4 (Br 2-n X n ):A, a phase having nominal formula M 9 Z 3 O 12 (Br 2-n X n ) 3 :A, or a combination of two or more of these phases;
wherein M is selected from the group consisting of zinc (Zn), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and combinations thereof;
wherein Z comprises germanium (Ge) or a combination of germanium (Ge) and silicon (Si);
wherein X is an additional halogen selected from the group consisting of fluorine (F), chlorine (Cl), iodine (I), and combinations thereof, and
wherein A is an activator comprising europium (Eu), and n is a number from 0 to 2.
14. A lighting apparatus comprising:
a light source; and
a phosphor material radiationally coupled to the light source, wherein the phosphor material comprises a phase having a nominal formula M 5 Z 2 O 7 (Br 4-n X n ):A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; Z comprises germanium (Ge) or a combination of germanium (Ge) and silicon (Si); X is an additional halogen selected from the group consisting of fluorine (F), chlorine (Cl), iodine (I), and combinations thereof, and n is a number from 0 to 2; and A is an activator is selected from the group consisting of europium, manganese, tin, chromium, bismuth, lead, antimony and lanthanides elements and combinations thereof.
15. A lighting apparatus comprising:
a light source; and
a phosphor material radiationally coupled to the light source, wherein the phosphor material comprises a phase having a nominal formula M 3 ZO 4 (Br 2-n X n ):A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; Z comprises germanium (Ge) or a combination of germanium (Ge) and silicon (Si); X is an additional halogen selected from the group consisting of fluorine (F), chlorine (Cl), iodine (I), and combinations thereof, and n is a number from 0 to 1; and A is an activator is selected from the group consisting of europium, manganese, tin, chromium, bismuth, lead, antimony, lanthanides elements and combinations thereof.
16. A lighting apparatus comprising:
a light source; and
a phosphor material radiationally coupled to the light source, wherein the phosphor material comprises a phase having a nominal formula M 9 Z 3 O 12 (Br 2-n X n ) 3 :A, wherein M is selected from the group consisting of Zn, Mg, Ca, Sr, Ba, and combinations thereof; Z comprises germanium (Ge) or a combination of germanium (Ge) and silicon (Si), X is an additional halogen selected from the group consisting of fluorine (F), chlorine (Cl), iodine (I), and combinations thereof, and n is a number from 0 to 1; and A is an activator comprising europium.
17. A lighting apparatus comprising:
a light source; and
a phosphor material radiationally coupled to the light source, wherein the phosphor material comprises a phase having nominal formula M 5 Z 2 O 7 (Br 4-n X n ):A, a phase having nominal formula M 3 ZO 4 (Br 2-n X n ):A, a phase having nominal formula M 9 Z 3 O 12 (Br 2-n X n ) 3 :A, or combinations of two or more of these phases,
wherein M is selected from the group consisting of zinc (Zn), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and combinations thereof;
wherein Z comprises germanium (Ge) or a combination of germanium (Ge) and silicon (Si);
wherein X is an additional halogen selected from the group consisting of fluorine (F), chlorine (Cl), iodine (I), and combinations thereof, and
wherein A is an activator comprising europium (Eu), and n is a number from 0 to 2.