Up-conversion Luminescence

Up-conversion Luminescence is essentially an Anti-Stokes light, which means the radiation energy is greater than the absorbed light. Up-conversion materials are mainly solid compounds doped with rare-earth elements, it can absorb multiple low energy long wave though the metastable level characteristics of rare-earth primary color, so as to make the invisible infrared light that people can not see to visible light.

Applications:Infrared detection in visible light of infrared excitation, biomarker, long afterglow luminous warning signs, fire path signs or the interior
 wall coating as a night light function and so on.