ZHU Xiaoping 1, LIANG Yaolong 2, LIU Junrong 2, YU Changfeng 1, ZHANG Ti 2
(1.Jingdezhen Ceramic Institute, Jingdezhen, 333001, Jiangxi, China; 2. Oceano Ceramic Co., Ltd., Foshan, 528000, Guangdong, China)
Abstract: A series of tests were developed around CaTiO3:Pr3+ red fl uorescent material. In this study, CaTiO3:Pr3+ red persistent phosphors with good glowing effect and about 20 minutes’ decay time were prepared by high-temperature solid-phase method with CaCO3, ZnO, TiO2 as main raw materials, Pr2O3 as the activate agent, Eu2O3 as auxiliary activators, Na2CO3 as compensate for the charge, as fl ux.Samples were characterized by means of powder X-ray diffraction (XRD) and laser spectral analysis. Result showed that main phase of the synthesized fl uorescent powder was CaTiO3:Pr3+ . Results shown that glowing effect were signifi cantly infl uenced by synthesis temperature and the soaking time, when composition determined, Optimum synthetic temperature was 1100 ℃, and soaking time was 2 hours.
Key words: CaTiO3:Pr3+ red long-afterglow phosphors; decay time; activating agent