Dy3+荧光体的微波合成及其发光特性
微波合成,,微波合成；CaSDy3+荧光体；发射光谱；发光中心,1试剂与仪器,2实验方法,3结果与讨论,4结论,参考文献
摘 要 目的 微波合成CaS:Dy3+荧光体，监测其发射光谱，探讨其发光原理。方法 微波快速加热法。通过XRD的测定，确定CaS:Dy3+ 的晶相。结果 CaS:Dy3+荧光在273 nm和300 nm监测下的发射光谱存在差异。结论 CaS：Dy3+属CaS立方晶相，CaS:Dy荧光体的两种不同的发射光谱是由两种不同的发光中心引起。关键词 微波合成；CaS:Dy3+荧光体；发射光谱；发光中心
CaS:Dy3+: microwave synthesis and luminescence properties
LI Junjun, ZHANG Maisheng
(1.Department of Inorganic Chemistry, Guangdong College of Pharmacy, Guangzhou 510240, China; 2.School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275, China)
Abstract Objective and Method To synthesize CaS:Dy3+ phosphors using microwave heating and evaluate the luminescence properties of the phosphors by measuring their emission spectra. Results The crystal structures of CaS:Dy3+ phosphors were determined by XRD, and their emission spectra were measured and compared under the wavelength of 273 and 300 nm. Conclusion The structure of CaS:Dy3+ phosphors belongs to CaS cubic system. Two different emission spectra are caused by the two different luminescence centers. ......
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