烧结温度对长余辉发光材料Ca2Zn4Ti15O36：Pr^3＋光性能的影响

Effect of Sintering Temperature on Optical Properties of Long-Lasting Luminescent Material Ca_2Zn_4Ti_(15)O_(36):Pr^(3+)

利用溶胶-凝胶法合成发光材料Ca_2Zn_4Ti_(15)O_(36):Pr^(3+),通过X射线衍射(XRD)、拉曼光谱(Raman)和激发光谱、发射光谱对固溶体的微结构和光学性能进行了表征.XRD分析结果表明:经1 050℃烧结22 h后XRD衍射峰峰值最高,结晶度最好,样品的晶粒尺寸在100～200 nm之间.Raman结果表明:Pr的掺杂并没有使谱峰强度有所变化,反映出Pr的掺杂量对样品表面性质影响不大.激发光和发射光谱表明:烧结温度为800℃时,激发和发射峰值最强,激发峰为312 nm,发射峰为614 nm.

Ca2Zn4Ti15O36Pr^3＋ red long lasting phosphorescent materials were prepared by sol-gel method.The microstructure and optical properties of the solid solution were characterized by X ray diffraction（XRD）, Raman spectroscopy（Raman）,excitation spectrum and emission spectrum.The results of XRD analysis show that samples calcined at 1 050 ℃ for 22 h possessed,the peak value of XRD diffraction peak is the highest and the crystallinity is the best.The grain size of the sample is between 100~200 nm.Raman results showed that the doping intensity of Pr did not change the peak intensity,indicating that the doping amount of Pr had little effect on the surface properties of the samples.The excitation and emission spectra show that when the sintering temperature is 800 ℃,the peak value of excitation and emission is the strongest and the excitation peak is 312 nm .The emission peak is 614 nm.