Patent ID: 8858836

Claim:
A phosphor that absorbs radiation in a first wavelength range of the electromagnetic spectrum and emits radiation in a second wavelength range of the electromagnetic spectrum, wherein the phosphor is a borophosphate activated with divalent rare earth metal ions and represented by the following general formula: AM 1-x R x BP 2 O 8 ; wherein: A is at least one univalent alkaline metal ion selected from the group comprising Li, K, Na, Rb, and Cs; M is at least one divalent metal ion selected from the group comprising Ca, Sr, Ba, Be, Mg, and Zn; RE is at least one divalent ion selected from the group comprising rare earth metals Eu, Sm, and Yb as well as Pb, Sn, Cu, and Mn, wherein at least one of the divalent rare earth metal ions Eu, Sm, and/or Yb is acting as an activator; and 0<x≦0.2.