研究目的
Investigating the thermometric performance of Tm3+/Yb3+ co-doped b-PbF2 glass ceramics based on unconventional thermometric coupled levels following a Boltzmann-type distribution for optical thermometry.
研究成果
The research demonstrates that Tm3+/Yb3+ co-doped b-PbF2 glass ceramics exhibit superior thermometric performance based on unconventional coupled levels of 3F2,3/1D2 and 3F2,3/1G4, with higher relative sensitivity compared to conventional TCELs. This provides a significant advancement in the development of optical thermometers with intense and precise probing signals.
研究不足
The study is limited to the specific composition of Tm3+/Yb3+ co-doped b-PbF2 glass ceramics and the temperature range of 288 to 498 K. The applicability of the findings to other materials or broader temperature ranges requires further investigation.
1：Experimental Design and Method Selection:
The study synthesized oxyfluoride glass ceramics containing b-PbF2 nanocrystals doped with Tm3+ and Yb3+ using a conventional melt-quenching method and subsequent glass crystallization route. The temperature-dependent upconversion luminescence behaviors were investigated to explore thermometric performance using the fluorescence intensity ratio method.
2：Sample Selection and Data Sources:
Samples were prepared with a composition of 30SiO2–15.5Al2O3–40PbF2–10CdF2–4.5Yb2O3–0.005Tm2O3. Data were collected from temperature-dependent UC emission spectra recorded from 288 to 498 K under 976 nm laser excitation.
3：5Al2O3–40PbF2–10CdF2–5Yb2O3–005Tm2OData were collected from temperature-dependent UC emission spectra recorded from 288 to 498 K under 976 nm laser excitation.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials:
- Rigaku D/Max-2500 diffractometer for EXRD patterns
4：Experimental Procedures and Operational Workflow:
- Synthesis of precursor oxyfluoride glass by melting-quenching method at 1000°C for 120 min.
5：Data Analysis Methods:
The fluorescence intensity ratio (FIR) method was employed to analyze the thermometric performance, using conventional and unconventional coupled levels of Tm3+.
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