US 9,109,162 B2 · Narrow spectral line-width emission phosphors with broad band excitation edge up to and including the blue wavelength region

Abstract

Aspects of the present invention provide a family of phosphor compositions that may be used in the field of lighting applications. These phosphor compositions have crystal structures and chemical bond arrangements that enable broad band absorption and excitation using radiation up to and including the blue wavelength region. A preferred embodiment of the phosphor compositions has a general formula of (AxAy . . . Az)3−(1+q)m(W1−rMor)O6:Lnm,Dqm, wherein x+y+ . . . +z=1; 0≦r≦1; 0≦q≦1; 0<m≦0.12; and A=Divalent element from group IIA and/or IIB (e.g., Mg2+, Ca2+, Sr2+, Ba2+, Zn2+, etc.), W=tungsten with 6+ charge state, Mo=Molybdenum with 6+ charge state, Ln=Trivalent rare earth lanthanide element (e.g., Ce3+ to Lu3+), D=Monovalent element from group IA and/or IB (e.g., Li1+, Na1+, Cu1+, etc.), and O=Oxygen (O2−).

Claims25

Dependent claims

A phosphor of formula

(AxAy . . . Az)3−(1+q)m(W1−rMor)O6:Lnm,Dqm
wherein,
x+y+ . . . +z=1;
0≦r≦1;
0≦q≦1;
0<m≦0.12;
A=one or more divalent elements from group IIA and IIB;
W=tungsten with a 6+ charge state;
Mo=molybdenum with a 6+ charge state;
Ln=one or more trivalent rare earth lanthanide elements;
D=one or more monovalent elements from group IA and IB;
and
O=Oxygen (O2−).

10 more elements

Dependencies are inferred from the claim text.

Narrow spectral line-width emission phosphors with broad band excitation edge up to and including the blue wavelength region

Life of this patent

Narrow spectral line-width emission phosphors with broad band excitation edge up to and including the blue wavelength region

Life of this patent

Abstract

Claims25