研究目的
Investigating the luminescence properties of Cr3+/Yb3+ co-doped oxy?uoride silicate glasses for application in crystalline silicon solar cell down-conversion devices.
研究成果
The Cr3+/Yb3+ co-doped oxy?uoride silicate glasses exhibit high thermal stability, efficient energy transfer, and quantum cutting, making them promising materials for enhancing the photoelectric conversion efficiency of crystalline silicon solar cells.
研究不足
The study does not address the scalability of the fabrication process for industrial applications. Additionally, the impact of environmental factors on the performance of the glasses in real-world solar cell applications was not explored.
1：Experimental Design and Method Selection:
The study involved the fabrication of oxy?uoride silicate glasses co-doped with Cr3+ and Yb3+ ions using the conventional melt quenching method. The thermal stability, structural properties, and luminescence characteristics of the glasses were analyzed.
2：Sample Selection and Data Sources:
High purity SiO2, Al2O3, NaF, B2O3, CaF2, Yb2O3, and Cr2O3 were used as raw materials. The samples were prepared with varying concentrations of Cr3+ and Yb3+ ions.
3：List of Experimental Equipment and Materials:
The study utilized a muffle furnace for melting, a corundum crucible, a copper plate for pressing, and an annealing furnace. Characterization techniques included DSC, SEM, EDS, XRD, FT-IR, UV/visible spectrophotometer, and fluorescence spectrometer.
4：Experimental Procedures and Operational Workflow:
The raw materials were mixed, melted at 1450 °C for 1 h, poured onto a copper plate, pressed into pieces, and annealed at 300 °C for 2 h. The samples were then polished for performance testing.
5：Data Analysis Methods:
The thermal stability was analyzed using DSC curves. Structural properties were examined using SEM, EDS, XRD, and FT-IR. Luminescence characteristics were obtained from PL and PLE spectra, and lifetime curves were measured to calculate energy transfer and quantum cutting efficiencies.
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muffle furnace
Used for melting the raw materials at high temperatures.
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corundum crucible
Used to hold the raw materials during the melting process.
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copper plate
Used to press the molten glass into pieces.
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annealing furnace
Used to anneal the glass samples to eliminate internal stress.
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DSC
Used to analyze the thermal stability of the glass samples.
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SEM
Used to investigate the morphology of the glass samples.
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EDS
Used to analyze the elemental composition of the glass samples.
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XRD
Used to analyze the phase structure of the glass samples.
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FT-IR
Used to explore the network structure of the glass samples.
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UV/visible spectrophotometer
Used to measure the absorption peaks of the glass samples.
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fluorescence spectrometer
Used to measure the PL, PLE spectra and lifetime curves of the glass samples.
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