研究目的
Investigating the energy transfer mechanism in oxide and oxy-fluoride phosphate glasses doped with Eu3+ ions for potential applications in solid-state lighting.
研究成果
The study concludes that both oxide and oxyfluoride phosphate glasses doped with Eu3+ ions exhibit promising luminescence properties, with oxyfluoride glasses showing superior performance. These glasses are potential candidates for red light-emitting sources in solid-state lighting applications due to their efficient energy transfer and longer decay times.
研究不足
The study is limited to the specific compositions of phosphate glasses doped with Eu3+ ions. The energy transfer mechanism and luminescence properties may vary with different host materials or dopant concentrations.
1：Experimental Design and Method Selection:
The study involved preparing phosphate glasses with varying concentrations of Eu2O3 using the conventional melt quenching technique. The Judd-Ofelt theory was applied to analyze the luminescence properties.
2：Sample Selection and Data Sources:
Samples were prepared with chemical compositions of (66-x) P2O5-17Li2O-17Gd2O3-xEu2O3 and (66-x) P2O5-17Li2O-17GdF3-xEu2O3, where x = 0.05, 0.1, 0.5, 1.0, and 2.0 mol%.
3：05, 1, 5, 0, and 0 mol%.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: High purity NH4H2PO4, Li2CO3, Gd2O3, GdF3, and Eu2O3 were used. Equipment included a 4-digit HR-200 balance, Abbe refractometer, UV-VIS-NIR spectrophotometer (Shimadzu, UV-3600), and fluorescence spectrophotometer (Agilent Technologies, Cary Eclipse).
4：Experimental Procedures and Operational Workflow:
The chemicals were mixed, heated, melted, quenched, annealed, and polished for optical measurements. Physical properties like density and refractive index were measured, and luminescence properties were analyzed.
5：Data Analysis Methods:
The Judd-Ofelt theory was used to calculate oscillator strengths, J-O intensity parameters, and other radiative properties. Data were analyzed for trends in luminescence and physical properties.
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