研究目的
Investigating the structural and luminescence properties of Sm3+:CaLa4Si3O13 phosphors for their application as orange-emitting components in WLEDs.
研究成果
The CaLa4Si3O13:Sm3+ phosphors exhibit promising luminescence properties for application in WLEDs as orange-emitting components. The highest intensity emission peak at 598 nm under 403 nm excitation suggests their suitability for enhancing the color rendering index of WLEDs.
研究不足
The study is limited to the sol-gel synthesis method and the specific concentration range of Sm3+ ions. The potential for scale-up and commercial application is not discussed.
1：Experimental Design and Method Selection:
The phosphors were prepared using the sol-gel process with citric acid as a chelating agent. The samples were fired at 1100 oC for 180 min in air.
2：Sample Selection and Data Sources:
Six different concentrations of CaLa4-xSi3O13:xSm3+ (0.005≤x≤0.09) phosphors were fabricated.
3：005≤x≤09) phosphors were fabricated.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Ca(NO3)2?4H2O, La(NO3)3?6H2O, Si=SiO2, Sm(NO3)3?6H2O, and citric acid were used.
4：Experimental Procedures and Operational Workflow:
The solution was stirred for 1 h to form transparent sol, kept in an oven until dry gels formed, and then fired at 400 oC for 120 min in air before final firing.
5：Data Analysis Methods:
XRD, PLE, PL, and diffuse reflectance spectrum were analyzed.
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