Abstract: To obtain the long lasting red phosphors,light conversion agents were connected to the Sr2ZnSi2O7∶Eu2+,Dy3+ by silane coupling agent.Sr2ZnSi2O7∶Eu2+,Dy3+ will emit blue light after excited by excitation light source,and then the blue light converted into the red light by the light conversion agent.As a result,the long afterglow composite phosphors can emit red fluorescent were prepared.The microstructure,colorimetric parameters,excitation and emission spectra of samples were tested and characterized by using scanning electron microscopy,fluorescent spectrophotometer and fluorescent material persistence characteristic tester.The results showed that the light conversion agent combined into the surface of Sr2ZnSi2O7 successfully,there were two emission peak 470nm and 600nm,and what's more,the composite phosphor can absorb ultraviolet and visible light.Besides,the influence of light conversion agents on Sr2ZnSi2O7 was researched.The fluorescent colors of red composite phosphors had red shifted with increasing the concentration of light conversion agent,but the afterglow performance and quantum efficiency decreased to some extent.
朱亚楠,薛昊龙,葛明桥. 稀土硅酸锌锶复合红色荧光粉的制备与表征[J]. 化工新型材料, 2018, 46(10): 105-108.
Zhu Yanan,Xue Haolong,Ge Mingqiao. Preparation and characterization of red composite phosphor made by Sr2ZnSi2O7∶Eu2+,Dy3+. New Chemical Materials, 2018, 46(10): 105-108.