Improvement of Emission Intensity for Near-infrared-emitting Ca14Zn6Al10O35:Mn4+Phosphor by Oxygen-pressure Method

We employed an oxygen-pressure method as a novel approach to improve the emission intensity of a Ca14Zn6Al10O35:Mn4+ phosphor. With this new approach, the Ca14Zn6Al10O35:Mn4+ phosphor exhibited near-infrared emission under excitation at 450 nm, and the emission intensity of a Ca14Zn6(Al0.97Mn0.03)10O35 phosphor was effectively enhanced by approximately 143% compared with that of a Ca14Zn6(Al0.97Mn0.03)10O35 phosphor synthesized by a conventional solid-state reaction method in air.