A novel red phosphor BaZn2(PO4)2:Smp>3+p>, Rp>+p> (R=Li, Na, K)
摘要
BaZn2(PO4)2:Smp>3+p> phosphor was synthesized by a high temperature solid-state reaction in atmosphere. BaZn2(PO4)2:Smp>3+p> phosphor can be efficiently excited by ultraviolet and blue light, and the emission spectrum consists of three emission peaks at 568, 606 and 660 nm. By increasing the Smp>3+p> doped content, the emission intensity of the phosphor can reach the maximum at 0.02 mol Smp>3+p>, then the concentration quenching occurs. By introducing the compensator charge Rp>+p> (R=Li, Na, K) into the BaZn2(PO4)2:Smp>3+p> phosphor, its emission intensity can be enhanced. The Commission International de l'Eclairage (CIE) chromaticity coordinates of Ba0.96Zn2(PO4)2:0.02Smp>3+p>, 0.02Kp>+p> phosphor were (m>xm>=0.623, m>ym>=0.361). The results indicate that BaZn2(PO4)2:Smp>3+p>, Rp>+p> (R=Li, Na, K) may be a promising red phosphor for white light-emitting diodes.