Dual-mode optical thermometry via efficient Bi3+→Eu3+ energy transfer in CaScAlSiO6 phosphors

IF 3.3 3区 物理与天体物理 Q2 OPTICS
Zhixian Zhang , Qingfeng Guo , Pengfei Shuai , Ke Su , Lefu Mei , Libing Liao
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引用次数: 0

Abstract

Accurate and self-referential temperature measurements are crucial for monitoring inaccessible workpieces, hazardous environments, and fluids. In this study, we developed CaScAlSiO6:Bi3+/Eu3+, a high-sensitivity, polychromatic, dual-luminescent center optical thermometric material, and investigated its luminescence mechanism through emission spectroscopy and decay lifetime characterization. By adjusting the Bi3+ to Eu3+ ratio, the samples achieved a visible color transition from blue to pink, revealing a unique energy transfer mechanism between the two luminescent centers that enables tunable emission and enhanced sensitivity. Owing to the unique thermal quenching characteristics of Bi3+ and Eu3+, the CaScAlSiO6 samples demonstrated superior optical thermometry capabilities over a temperature range from 323 K to 453 K. At 453 K, the fluorescence intensity ratio between Bi3+ and Eu3+ reached peak sensitivities, absolute sensitivity (Sa) of 4.11 % K−1 and relative sensitivity (Sr) of 0.87 % K−1. Additionally, these samples exhibited a significant chromatic shift of 0.0508, demonstrating the potential for visual temperature sensing, while consistently showing excellent reversibility and repeatability in performance. The impressive performance of the two temperature measurement systems, characterized by their exceptional results, high sensitivity, and precise signal resolution, positions CaScAlSiO6:Bi3+/Eu3+ luminescent materials as a promising candidate for multi-mode and self-referenced luminescent thermometry applications.
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来源期刊
Journal of Luminescence
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.
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