Insight into LIR-based speed sensing of Ho3+ upconversion luminescence

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-01-09 DOI:10.1016/j.jlumin.2025.121081

Ying Ji, Tao Pang, Peizhen Qiu, Junwen Mao

引用次数: 0

Abstract

Luminescence intensity ratio (LIR)-based speed sensing technology has attracted increasing attention since it can eliminate the influence of external factors such as instrument noise and environment. Unfortunately, it remains unclear how to improve speed sensitivity. Herein, we reported a novel candidate material, NaLu(MoO₄)₂:Yb³⁺/Ho³⁺, for LIR-based speed sensing. Mechanistic investigations show that the relative speed sensitivity is positively related to the intensity ratio of green and red emissions under steady-state excitation. As a result, it is crucial for high-sensitive speed sensing to set appropriate excitation conditions. When excited at a power density of 8.9 W/cm², a maximum relative sensitivity of ∼1.085 h/km is available. These findings provide keen insights into designing high-sensitive LIR-based speed sensors.

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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.