研究目的
Investigating the luminescent properties and thermal stability of a novel Eu3+-doped Sr3Y(BO3)3 red-emitting phosphor for NUV chip-based white light-emitting diodes (WLEDs).
研究成果
The Sr3Y(BO3)3: Eu3+ phosphor exhibits strong and high-purity red emission under UV excitation with minimal concentration quenching and good thermal stability, making it a promising candidate for NUV-excited red phosphor in LED applications.
研究不足
The study focuses on the luminescent properties and thermal stability of Sr3Y(BO3)3: Eu3+ phosphor, but does not explore its application in actual LED devices or the scalability of the synthesis method.
1：Experimental Design and Method Selection:
Polycrystalline samples of Sr3Y(1-x)(BO3)3: xEu3+ were prepared by a solid-state reaction at high temperature.
2：Sample Selection and Data Sources:
Analytical purity SrCO3, Y2O3, H3BO3 and high purity Eu2O3 (
3：99%) were used as raw materials. List of Experimental Equipment and Materials:
Rigaku D/max 2200vpc X-ray diffractometer, UV/visible spectrophotometer (UV-3600, SHIMADZU), Edinburgh FLS-920 combined fluorescence lifetime and steady state spectrometer.
4：Experimental Procedures and Operational Workflow:
The raw materials were mixed and ground, then sintered under ambient atmosphere at 600 °C for 3 h, followed by grinding and sintering at 1000 °C for 10 h in air.
5：Data Analysis Methods:
Powder X-ray diffraction (XRD), diffuse reflection spectra (DRS), photoluminescence (PL), photoluminescence excitation (PLE) spectra and luminescence decay were measured and analyzed.
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