研究目的
Investigating the luminous mechanism of Eu2+ and Dy3+ co-doped long persistent luminous fiber.
研究成果
The study concluded that the afterglow intensity of SAOED-PET was lower than that of SAOED but had a longer decay time. The thermo-luminescence peak shifted to a higher temperature for the fiber, indicating a longer afterglow decay time. The afterglow decay process followed second-order dynamics, and the depth of the trap level did not change significantly with the extension of delay time after excitation.
研究不足
The study did not explore the effect of varying the concentration of Eu2+ and Dy3+ on the luminous properties of the fiber. Additionally, the impact of environmental factors on the fiber's performance was not investigated.
1：Experimental Design and Method Selection:
The study involved blending fiber-forming polymer polyethylene terephthalate chips with Eu2+ and Dy3+ co-doped SrAl2O4 (SAOED) to create luminous fiber. A dynamical model was established to study the afterglow process.
2：Sample Selection and Data Sources:
Materials included SrCO3, Al2O3, Eu2O3, Dy2O3, H3BO3, and PET slides.
3：List of Experimental Equipment and Materials:
Equipment included a PR-650 spectral scanning colorimeter and a FJ27A-I thermo-luminescent fluorimeter.
4：Experimental Procedures and Operational Workflow:
The process involved preparation of luminescent materials and fibers, followed by characteristic analysis including afterglow decay curves and thermo-luminescence spectra measurement.
5：Data Analysis Methods:
The afterglow decay curves were fitted using a second-order dynamics model.
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