Crystal growth and evaluating luminescent properties of Eu-doped (Y, Lu, Sc)2O3 for optical thermometry

IF 3.6 3区物理与天体物理 Q2 OPTICS Journal of Luminescence Pub Date : 2025-05-01 Epub Date: 2025-02-08 DOI:10.1016/j.jlumin.2025.121118

Yuka Abe , Takahiko Horiai , Yuui Yokota , Masao Yoshino , Jan Pejchal , Romana Kucerkova , Rikito Murakami , Takashi Hanada , Akihiro Yamaji , Hiroki Sato , Yuji Ohashi , Shunsuke Kurosawa , Kei Kamada , Martin Nikl , Akira Yoshikawa

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Abstract

Optical thermometry is one of the promising methods of detecting temperature under harsh environments. In this study, for the development of a novel optical thermometer, we focused on Eu-doped (Y, Lu, Sc)₂O₃ and grew single crystals using the micro-pulling-down method. Crystal growth was performed by systematically changing the ratio of Y to Lu, and the crystalline system and space group were identified to be cubic and Ia–3, respectively, by the powder X-ray diffraction analysis. From the photoluminescence emission spectra, the emission peaks attributed to Eu³⁺ ⁵D₀–⁷F₁ and ⁵D₁–⁷F₁ transitions were observed. The temperature dependence of these emission peaks was measured and evaluated using the fluorescence intensity ratio method to estimate the performance as the optical thermometer. It was found that Eu-doped (Y, Lu, Sc)₂O₃ can be used as the optical thermometer in the temperature range from 430 K to 790 K. The relative sensitivity reached a maximum of 0.22 %K⁻¹ at 760 K.

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铕掺杂（Y, Lu, Sc）2O3光学测温晶体生长及发光性能评价

光学测温是一种很有前途的恶劣环境下温度检测方法。在这项研究中，为了开发一种新型光学温度计，我们专注于铕掺杂（Y, Lu, Sc）2O3，并使用微拉下法生长单晶。通过系统地改变Y与Lu的比例进行晶体生长，通过粉末x射线衍射分析确定晶体体系为立方晶系，空间群为Ia-3。从光致发光光谱中，观察到Eu3+ 5D0-7F1和5D1-7F1跃迁的发射峰。利用荧光强度比法测量和评价了这些发射峰的温度依赖性，以估计其作为光学温度计的性能。发现铕掺杂（Y, Lu, Sc）2O3可以在430 ~ 790 K的温度范围内作为光学温度计。在760 K时，相对灵敏度达到最大值0.22% K−1。

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.