【摘要】 自参考光学温度计在快速响应和高精度方面显示出竞争优势，因为可以规避一些不可避免的外部因素，如浓度变化、激发波动和检测器损耗。本文报道了Eu/Tb/SnO₂纳米晶体共掺杂二氧化硅玻璃的三激活剂光致发光。基于Eu³⁺（⁵D₀-⁷F₂跃迁，620 nm）/Eu²⁺(4f⁶5d-⁸S_7/2跃迁，434 nm)和Eu³⁺（⁵D₀-⁷F₂跃迁，620 nm）/Tb³⁺（⁵D₄-⁷F₅跃迁，542 nm）的非热耦合能级的温度依赖性荧光强度比可用于298～773 K宽范围内的自参考温度探测。在773 K时，最大相对热灵敏度S_r可达2.3%·K^-1，高于大多数Eu/Tb共掺杂材料。这项工作将为三重激活剂的自参考光学温度测量提供一种新的Eu/Tb共掺杂材料。更多还原

【Abstract】 Self-referencing optical thermometers have shown competitive advantages on fast response and high accuracy as they can avoid inevitable external factors like concentration change,excitation fluctuation,and detector loss.Herein,we report the triple-emitting photoluminescence of Eu/Tb/SnO₂ nanocrystals co-doped silica glasses.The temperature-dependent fluorescence intensity ratio of non-thermal coupled levels of Eu³⁺（⁵D₀-⁷F₂ transition,620nm）/Eu²⁺(4f⁶5d-⁸S_7/2 transition,434 nm) and Eu³⁺（⁵D₀-⁷F₂ transition,620 nm）/Tb³⁺（⁵D₄-⁷F₅ transition,542 nm） can be used for self-referencing temperature probing in a wide range of 298-773 K.The maximum relative thermal sensitivity S_r values can reach 2.3%·K^-1 at 773 K,which is higher than most Eu/Tb co-doped materials.This work will contribute a new Eu/Tb co-doped material to self-referencing optical temperature measurement with triple activators.更多还原