荧光粉
激发态
发光
材料科学
分析化学(期刊)
大气温度范围
激发
光电子学
基态
热稳定性
化学
原子物理学
热力学
物理
量子力学
有机化学
色谱法
作者
Muhammed Tahir Abbas,Noor Zamin Khan,Nisar Muhammad,Ikhtisham Mehmood,Jiashan Mao,Sayed Ali Khan
标识
DOI:10.1016/j.jallcom.2022.164340
摘要
Lanthanides doped vanadate luminescence materials have gained a lot of attention for their use in non-contact optical thermometry, because of the advantages of non-intrusive and real-time temperature detection. The approach of fluorescence intensity ratio (FIR) of two thermally coupled excited states is the most promising approach but their performance in a lower temperature range is limited due to thermal decoupling among the two emitting levels with a wide energy gap. Thus, in this work, the temperature sensing ability of ScVO4:2% Eu3+ phosphor synthesized successfully through a high-temperature solid-state reaction has been explored by employing the ground state thermal coupling approach. Various experimental and theoretical approaches were used to check the structure and compositional stability of the synthesized ScVO4:2%Eu3+ phosphors host lattice. The temperature-dependent emission intensity of 5D0→7F4 has been measured under 616.3 nm excitation corresponding to 5D0→7F2 absorption, which shows the remarkable increasing behavior with rising of temperature ranging from 113 K to 323 K. The highest value of the relative sensitivity reached 7.19% K−1 at 113 K which is higher than previously reported materials. The obtained results reveal that ScVO4:2% Eu3+ phosphor is a promising candidate for non-contact optical thermometry.
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