Swir pcLED and spinel type phosphors emitting in the 1000-1700 nm range
AssigneeLumileds LLC
InventorsPeter Josef Schmidt, Detlef Wiechert, Cristian Dan
Life of this patent
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Abstract
A wavelength converting structure is disclosed, the wavelength converting structure including a spinel type SWIR phosphor material having emission wavelengths in the range of 1000 to 1700 nm, the SWIR phosphor material including AE1-x-zAz+0.5(x-y)D2+0.5(x-y)-z-u EzO4:Niy,Cru where AE=Mg, Zn, Co, or Be, or mixtures thereof, A=Li, Na, Cu, or Ag, or mixtures thereof, D=Ga, Al, B, In, or Sc, or mixtures thereof, and E=Si, Ge, Sn, Ti, Zr, or Hf, or mixtures thereof; where 0≤x≤1, 0<y≤0.1, 0≤z≤1, 0≤u≤0.2.
Claims16
A wavelength converting structure comprising an SWIR phosphor material having emission wavelength in the range of 1000 to 1700 nm, the SWIR phosphor material represented by formula:
- AE1-x-zAz+0.5(x-y)D2+0.5(x-y)-z-uEzO4:Niy, Cru where AE=Mg, Zn, Co, or Be, or mixtures thereof, A=Li, Na, Cu, or Ag, or mixtures thereof, D=Ga, Al, B, In, or Sc, or mixtures thereof, and E=Si, Ge, Sn, Ti, Zr, or Hf, or mixtures thereof;
- where 0≤x≤1, 0<y≤0.1, 0≤z≤1, 0≤u≤0.2, 0≤1−x−z, and 0≤z+0.5(x−y).
A luminescent material that emits light having a peak wavelength in the range of 1000 nm to 1700 nm, the luminescent material represented by formula:
- AE1-x-zAz+0.5(x-y)D2+0.5(x-y)-z-uEzO4:Niy, Cru where AE=Mg, Zn, Co, or Be, or mixtures thereof, A=Li, Na, Cu, or Ag, or mixtures thereof, D=Ga, Al, B, In, or Sc, or mixtures thereof, and E=Si, Ge, Sn, Ti, Zr, or Hf, or mixtures thereof;
- where 0≤x≤1, 0<y≤0.1, 0≤z≤1, 0≤u≤0.2, 0≤1−x−z, and 0≤z+0.5(x−y).
Dependencies are inferred from the claim text.