Fluorescence property of ZrO2:Ti phosphor and its enhancement in fluorescent intensity by adding phosphorus

AbstractIt was investigated how the PL of the blue phosphor, ZrO2:Ti, was affected by the change in addition amounts of Ti. The 1000ppm Ti doped ZrO2, (ZrO2+1000ppm Ti), showed the strongest PL, which was 5.4 times higher than that of the pure ZrO2. This strong PL was further improved by the addition of P, Sn, Se, B and Si to the (ZrO2+1000ppm Ti) phosphor. The improvement was achieved by the (ZrO2+1000ppm Ti+4000ppm P) phosphor, and its absorptivity, internal quantum efficiency and external quantum efficiency were 53, 59 and 31% at room temperature, respectively, when excited at 280nm