LaSc3(BO3)4:Eu3+&g-C3N4 composite phosphor for dual-mode temperature sensing

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-01-13 DOI:10.1016/j.jlumin.2025.121084

JieYing Shang , Qian Liao , XingYu Zhao , Fangfang Hu , Hai Guo

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引用次数: 0

Abstract

In this paper, g-C₃N₄ and LaSc₃(BO₃)₄:Eu³⁺ (LSB:Eu³⁺) phosphors were successfully fabricated through a high-temperature solid-phase approach. The luminescent intensity of LSB:Eu³⁺ and g-C₃N₄ exhibited distinct response patterns to temperature, enabling their luminescence intensity ratio to serve as a reliable indicator for temperature characterization. Composite phosphors were obtained by mixing LSB:Eu³⁺ and g-C₃N₄ at various mass ratios (1:1, 3:1, 5:1), followed by studying their variable temperature spectra within the range of 313–573 K were studied. The results demonstrated that the composite phosphor achieved a maximum absolute sensitivity of 0.24 % K⁻¹@573 K and a maximum relative sensitivity of 1.16 % K⁻¹@313 K, respectively. Furthermore, the luminescent color of composite phosphor shifted from violet to red as the temperature increased, enabling temperature characterization based on CIE coordinates of spectra. Notably, a maximum color shift of 0.246 at 573 K was observed due to thermochromic effects, which facilitated dual-mode self-calibration for temperature measurement. In summary, g-C₃N₄ and LSB:Eu³⁺ composite phosphors exhibit significant potential for applications in self-calibration temperature sensing.

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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.