研究目的
Investigating the near-infrared fluorescence and long-lasting phosphorescence properties of Cr3+-doped Sr2MgWO6 phosphors for potential applications in bio-labels, optical information storage, and night-vision surveillance.
研究成果
Sr2MgWO6:Cr3+ phosphors exhibit efficient NIR fluorescence and long-lasting phosphorescence, with potential applications in bio-labels, optical information storage, and night-vision surveillance. The optimal Cr3+ content for LLP was found to be 0.1%.
研究不足
The study is limited to the synthesis and characterization of Sr2MgWO6:Cr3+ phosphors. Further optimization is needed for practical applications.
1：Experimental Design and Method Selection:
Solid-state reaction method was used to synthesize Sr2MgWO6:Cr3+ phosphors.
2：Sample Selection and Data Sources:
Stoichiometric amounts of SrCO3, WO3, MgO, and Cr(NO3)3·9H2O were used.
3：List of Experimental Equipment and Materials:
X-ray powder diffraction (XRD), photoluminescence spectra, photoluminescence excitation spectra, LLP decay curves, and thermoluminescence glow curves were measured.
4：Experimental Procedures and Operational Workflow:
Samples were pre-fired at 900°C for 2 h, then calcined at 1300°C for 5 h in air.
5：Data Analysis Methods:
The fluorescence properties and LLP mechanism were analyzed based on the measured spectra and curves.
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