Near infrared doped phosphors having an alkaline gallate matrix

摘要

Phosphors based on doping of an activator (an emitter) into a host matrix are disclosed herein. Such phosphors include alkaline gallate phosphors doped with Cr3+ or Ni2+ ions, which in some embodiments can exhibit persistent infrared phosphorescence for as long as 200 hours. Such phosphors can be used, for example, as components of a luminescent paint.

主权项

1. A phosphor comprising a material having one or more of the following formulas:
AGa5O8:xC,yR;and AGaO2:xC,yR wherein a portion of Ga may optionally be replaced with a Group IIIA metal and/or a Group IVA metal; and wherein each A is independently an alkaline metal; each C is independently Cr3+, Ni2+, or a combination thereof; each R is independently a Zn2+ ion, an alkaline earth metal ion, or a combination thereof; each x is independently 0.01 to 5 and represents mol % based on the total moles of Ga and any replacements thereof; and each y is independently 0.1 to 2 and represents mol % based on the total moles of Ga and any replacements thereof.