Ce^(3+)-Tb^(3+)共掺杂黄磷炉渣微晶玻璃的发光与能量传递

Luminescence and energy transfer of Ce^(3+)-Tb^(3+)codoped yellow phosphorus slag glass-ceramics

以黄磷炉渣为原料,采用高温熔融法制备Ce^(3+)-Tb^(3+)共掺杂黄磷炉渣发光微晶玻璃,通过差热分析(DTA)、X射线衍射(XRD)、稳态/瞬态荧光(FLS)、CIE色度等探究不同的Tb^(3+)掺杂量对微晶玻璃析出晶相、发光性能和样品色度的影响。结果表明,Ce^(3+)和Tb^(3+)的引入,微晶玻璃主晶相为硅灰石,在310 nm波长激发下,随着Tb^(3+)掺杂量增加,位于380 nm处Ce^(3+)的特征发射峰减小,543 nm处Tb^(3+)的特征发射峰增强,证实Ce^(3+)和Tb^(3+)之间存在能量传递,能量传递效率达到24.55%。此外,通过调整Tb^(3+)掺杂量,微晶玻璃发光颜色可由蓝光调至绿光,从而实现发光颜色的可控化。

Using yellow phosphorus slag as raw material,Ce^(3+)-Tb^(3+)co doped yellow phosphorus slag luminescent glass-ceramics were prepared by high-temperature melting method.The effects of different Tb^(3+)doping amounts on the precipitated crystal phase,luminescence performance,and sample chromaticity of the glass-ceramics were investigated through differential thermal analysis(DTA),X-ray diffraction(XRD),steady-state/transient fluorescence(FLS),CIE chromaticity,etc.The results show that with the introduction of Ce^(3+)and Tb^(3+),the main crystal phase of the microcrystalline glass is wollastonite.Under excitation at 310 nm,as the doping amount of Tb^(3+)increases,the characteristic emission peak of Ce^(3+)at 380 nm decreases,and the characteristic emission peak of Tb^(3+)at 543 nm increases.This confirms the existence of energy transfer between Ce^(3+)and Tb^(3+),with an energy transfer efficiency of 24.55%.In addition,by adjusting the Tb^(3+)doping amount,the luminescence color of the microcrystalline glass can be adjusted from blue light to green light,thereby achieving controllable luminescence color.