Light emitting halogen-silicate photophosphor compositions and systems
First Claim
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1. ) Compositions of matter in accordance with:
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((SrO)1−
x[Me]Ox)a*(SiO2)b*Sr(F2−
yCly);
(EuO)z where ‘
a’
is an integer between 1 and 6;
‘
b’
is an integer between 1 and 5;
x=0.1-0.001;
y=0.01-1.2;
z=0.001-0.1; and
[Me] is a metal from the group;
Ba+2, Yb+2, and Sm+2.
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Abstract
New high-performance, highly tunable photophosphors are presented. These photophosphor'"'"'s pump spectra and emission spectra are both manipulated via variances in the formulation of compounds taught herein. In addition, new combinations of semiconductor devices in conjunction with these optically active materials are described. In particular, light emitting semiconductors fashioned as diodes from indium gallium nitride construction are combined with these photophosphors. High-energy short wavelength light mixes with the longer wavelengths light emitted by the halogen-silicate photophosphor to produce a broad spectrum perceived by human observers as “white light”.
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Citations
16 Claims
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1. ) Compositions of matter in accordance with:
-
((SrO)1−
x[Me]Ox)a*(SiO2)b*Sr(F2−
yCly);
(EuO)zwhere ‘
a’
is an integer between 1 and 6;
‘
b’
is an integer between 1 and 5;
x=0.1-0.001;
y=0.01-1.2;
z=0.001-0.1; and
[Me] is a metal from the group;
Ba+2, Yb+2, and Sm+2.- View Dependent Claims (2, 3, 4, 5, 6, 7)
SrO*SiO2*Sr(F,Cl)2 or Sr2SiO3(F,Cl)2
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3. ) Compositions of matter of claim 1, further defined as:
2SrO*SiO2*Sr(F,Cl)2 or Sr3SiO4(F,Cl)2
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4. ) Compositions of matter of claim 1, further defined as:
3SrO*SiO2*Sr(F,Cl)2 or Sr4SiO5(F,Cl)2
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5. ) Compositions of matter of claim 1, further defined as:
SrO*2SiO2*Sr(F,Cl)2 or Sr2Si2O5(F,Cl)2
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6. ) Compositions of matter of claim 1, further defined as:
2SrO*2SiO2*Sr(F,Cl)2 or Sr3Si2O6(F,Cl)2
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7. ) Compositions of matter of claim 1, further defined as:
3SrO*2SiO2*Sr(F,Cl)2 or Sr4Si2O7(F,Cl)2
- 8. ) In combination, a light emitting semiconductor and halogen-silicate photophosphors, said light emitting semiconductor proximately positioned with respect to said halogen-silicate photophosphor whereby some of light emitted by the semiconductor interacts with the photophosphor and is shifted in wavelength via phosphor re-emission.
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