Wavelength converting material
AssigneeEpistar Corporation
InventorsTzu-Chen Liu, Ru-Shi Liu
Life of this patent
Estimating the term…
Abstract
A wavelength converting material comprising a phosphate compound have a chemical formula of AB1-m-nPO4:Mm, Nn, wherein A comprises an alkali metal element, B comprises an alkaline earth metal element, M is a sensitizer comprising a rare-earth element, and N is an acceptor comprising a rare-earth element, wherein 0<m≦0.3 and 0<n≦0.3.
Claims19
A wavelength converting material comprising a phosphate compound having a chemical formula of AB1-m-nPO4:Mm, Nn, wherein A comprises an alkali metal element, B comprises an alkaline earth metal element, M is a sensitizer and at least one element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Lu, and N is an acceptor and comprising a Yb element, the wavelength converting material is configured to emit a light with a peak wavelength ranging from 960 to 1040 nm, and wherein 0<m<0.3 and 0<n<0.3.
Dependencies are inferred from the claim text.