Abstract Tm3+-doped transparent oxyfluoride glass ceramics containing BaYbxY(1-x)F5 nanocrystals were prepared via high temperature solid phase melting method, of which up-conversion emission is achieved by the Yb3+-mediated energy transfer process. The required photon number of Tm3+ ions emissions in BaYbxY(1-x)F5 nanocrystals was calculated through the luminescence spectra, revealing the strong dependence of energy transfer mechanism on Yb3+ ions concentration. Meanwhile, based on the fluorescence intensity ratio technology, the effect of different energy transfer mechanism on the temperature sensitivity was investigated by the temperature-dependent luminescence intensity of thermally coupled energy levels of Tm3+: 1G4(a), 1G4(b). The obtained sensitivity decreases with the increase of Yb3+ ions content, which is mainly attributed to the changes in photon absorption process of Tm3+: 1G4(b).

中文翻译：

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Tm3+ 的温度传感行为：含 BaYb Y(1-)F5 纳米晶体的氟氧化物玻璃陶瓷中的 1G4(a)、1G4(b)

摘要 采用高温固相熔融法制备了含有BaYbxY(1-x)F5纳米晶的Tm3+掺杂透明氟氧化物玻璃陶瓷，其上转换发射是通过Yb3+介导的能量转移过程实现的。BaYbxY(1-x)F5 纳米晶体中 Tm3+ 离子发射所需的光子数通过发光光谱计算，揭示了能量转移机制对 Yb3+ 离子浓度的强烈依赖性。同时，基于荧光强度比技术，通过Tm3+：1G4(a)、1G4(b)热耦合能级随温度变化的发光强度研究了不同能量转移机制对温度敏感性的影响。获得的灵敏度随着 Yb3+ 离子含量的增加而降低，