Red-emitting nitridophosphate phosphor and white phosphor-converted led
AssigneeLumileds LLC
InventorsPeter Josef Schmidt, Wolfgang Schnick, Reinhard Pritzl, Philipp-Jean Strobel, Thomas Diederich
Life of this patent
Estimating the term…
Abstract
An inventive luminescent material suitable for use as a phosphor for an LED includes a nitridophosphate material having a general formula AEy-xLi10-2yP4N10:Eux, wherein (i) AE includes one or more of Ca, Sr, or Ba, and (ii) y≥x>0. In some instances, y can equal 2 and x can be between 0 and 0.1. In some instances, AE can include only Ca; in some other instances, AE can include a majority amount of Ca and lesser amounts of Sr or Ba. In some instances, the luminescent material can exhibit a peak emission wavelength greater than 600 nm.
Claims22
A luminescent material comprising a nitridophosphate material having a general formula AEy-xLi10-2yP4N10:Eux, wherein (i) AE includes one or more of Ca, Sr, or Ba, and (ii) y≥x>0.
A wavelength-converting structure comprising a nitridophosphate luminescent material having a general formula AEy-xLi10-2yP4N10:Eux, wherein (i) AE includes one or more of Ca, Sr, or Ba, and (ii) y≥x>0.
Dependencies are inferred from the claim text.