Photoluminescence-based temperature sensing in Nd³⁺-Doped tellurite glasses

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-01-17 DOI:10.1016/j.jlumin.2025.121090

Arthur S.B.Z. Alves , Nilmar S. Camilo , José C.S. Filho , Jorge E. Mabjaia , Viviane Pilla , Noelio O. Dantas , Acácio A. Andrade

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Abstract

Tellurite glasses doped with varying concentrations of Nd³⁺ ions (1–4 mol%) were synthesized via the melt-quenching method and investigated for their potential application in temperature sensing. Raman spectroscopy confirmed the amorphous nature of the glass matrix and revealed minimal structural changes upon Nd³⁺ incorporation. Optical absorption spectra exhibited characteristic Nd³⁺ bands, confirming successful doping. Temperature-dependent photoluminescence measurements (303–573 K) under 532 nm excitation revealed a significant variation in the intensity ratio between the ⁴F_5/2+²H_9/2 → ⁴I_9/2 (806 nm) and ⁴F_3/2 → ⁴I_9/2 (890 nm) transitions of Nd³⁺. This luminescence intensity ratio exhibited a temperature dependence, demonstrating the material's potential as an optical thermometer. The relative sensitivity of 1.62 % K⁻¹ was calculated and found to be maximal near room temperature, highlighting the suitability of the material for this temperature range. The photoluminescence decay curves provided insights into the energy transfer processes and non-radiative decay pathways affecting the luminescence dynamics. The results demonstrate the potential of Nd³⁺-doped tellurite glass as a sensitive and reliable optical temperature sensor, particularly for applications near room temperature.

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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.