期刊
CERAMICS INTERNATIONAL
卷 46, 期 14, 页码 23223-23231出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.06.106
关键词
Gd2O3; Thin-film; Luminescence thermometry; Temperature sensor; Fiber-optic
资金
- National Recruitment Program of High-end Foreign Experts [GDT20185200479]
- Chongqing University of Posts and Telecommunications (CQUPT)
- Ministry of Education, Science and Technological Development of the Republic of Serbia [45020, 171035]
The steady-state luminescence thermometry analysis was performed on thin-films of undoped Gd2O3 and Gd2O3 doped with Ho3+, Eu3+ and Er3+, created by the plasma electrolytic oxidation process. The experimental setup for luminescent measurements closely resembles the practical luminescent fiber-optic thermometer. The visible PL from Gd3+ was utilized for the luminescence intensity ratio method, exceling over the traditional method by using the thermally coupled levels, as it is superior by either better sensitivities, widened temperature range or improved temperature resolution. The relative uncertainty by our method is similar to 300 times lower @ 300 K for Gd2O3:Eu3+. The maximum relative sensitivities by the luminescence intensity ratio (LIR) of Gd2O3:Ho3+, Gd2O3:Eu3+ and Gd2O3:Er3+ are 0.12% @ 295 K, 0.44% @ 580 K and 1.1% @ 290 K, respectively. Line-shift showed a significant change solely for Eu3+ doped sample, by 0.076 cm(-1) K-1. The full-width-half-maximum (FWHM) changes of undoped Gd2O3 and doped by Eu3+ at the high rate of 0.3 cm(-1) K-1 @ 573 K and 0.53 cm(-1) K-1 @ 300 K, respectively, but was marked impractical for other samples.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据