研究目的
Investigating the optical and excitation power dependent luminescence properties of Eu3+-doped barium borate glasses for potential lighting applications.
研究成果
Barium borate glass doped with Eu2O3 provides high quantum efficiency values of more than 80% and shows potential for lighting applications. The excitation power dependent photoluminescence measurements reveal a nonlinear power density, indicating the need for further optimization for high-power applications.
研究不足
The nonlinear behaviour of the luminescence intensity at higher power densities may limit the application in high-power lighting. The small shift in excitation wavelength with increasing power densities affects the absorption and emission properties.
1：Experimental Design and Method Selection:
The study involved preparing barium borate glasses doped with different concentrations of Eu3+ to analyze their luminescence properties.
2：Sample Selection and Data Sources:
Glasses were doped with 1, 2, 3, and 5 mol% Eu2O
3：List of Experimental Equipment and Materials:
A platinum/gold crucible (Pt/Au 95/5) was used for melting the chemicals. Optical properties were measured using a UV/Vis/NIR spectrophotometer (Agilent Cary 5000) and a commercial system (Hamamatsu C9920) for quantum efficiency measurements.
4：Experimental Procedures and Operational Workflow:
The glasses were melted at 1100°C, poured onto a brass block, and slowly cooled to room temperature. Samples were then cut and polished for optical measurements.
5：Data Analysis Methods:
The luminescence intensity and quantum efficiency were analyzed to understand the excitation power dependence.
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