Wang Jiawen, Feng Qingyang, Lei Ruoshan, Chen Xiaohan, Deng Degang, Xu Shiqing
Opt Lett. 2022 Jul 15;47(14):3415-3418. doi: 10.1364/OL.462252.
In this study, a dual-mode optical thermometer is designed based on radiative transitions from Eu and Eu ions at different KYSiO lattice sites. In the luminescence-intensity-ratio strategy, a ratiometric signal composed of Eu:D→F and Eu:D→F emissions at 593 and 616 nm, respectively, is employed. Meanwhile, the intensity ratio of the 593-nm emission under O→Eu charge transfer excitation (λ= 249 nm) to that upon Eu:4f→4f5d excitation (λ= 349 nm) is selected as a thermometric parameter in the single-band-ratio approach. The study findings show that combining the two strategies is conducive to the improvements in sensing-sensitive and anti-interference performance.
在本研究中，基于不同KYSiO晶格位点上Eu和Eu离子的辐射跃迁设计了一种双模式光学温度计。在发光强度比策略中，采用了分别由593 nm和616 nm处Eu:D→F以及Eu:D→F发射组成的比率信号。同时，在单波段比率方法中，选择了在O→Eu电荷转移激发（λ = 249 nm）下593 nm发射强度与Eu:4f→4f5d激发（λ = 349 nm）下593 nm发射强度的比率作为测温参数。研究结果表明，将这两种策略相结合有利于提高传感灵敏度和抗干扰性能。
