Abstract

A new strategy of optical thermometry is realized by long persistent luminescence phosphor $\mathrm{Sr}{\mathrm{Al}}_2{\mathrm{O}}_4\text{:}{\mathrm{Eu}}^{2+}$, ${\mathrm{Dy}}^{3+}$, ${\mathrm{Tb}}^{3+}$ (SAEDT). Under different temperatures, SAEDT shows bright afterglow emissions after cessation of the UV excitation. The afterglow color of the SAEDT sample is blue at 60 K and gradually changed into green at 240 K. The normalized afterglow spectra at different temperatures give a dramatic change of fluorescence intensity ratio between the blue band and the green band. Not only has this material exhibited a high absolute sensitivity and relative sensitivity for temperature sensing, but it also has the great advantage of eliminating the heating effect due to avoidance of real-time direct excitation.

© 2018 Optical Society of America

Tunable afterglow Ca_1 − xSr_xAl₂O₄:Eu²⁺, Nd³⁺ phosphors with dependence of an excitation wavelength

Lulu Li, Panpan Li, Yixi Wu, Jing Li, Xinlian Zhang, Shiqing Xu, and Junjie Zhang
Opt. Lett. 49(2) 294-297 (2024)

Near infrared photostimulated persistent luminescence and information storage of SrAl₂O₄:Eu²⁺,Dy³⁺ phosphor

Haibo Liu, Baoluo Feng, Li Luo, Chunlong Han, and Peter A. Tanner
Opt. Mater. Express 6(11) 3375-3385 (2016)

Strategy for optical thermometry based on temperature-dependent charge transfer to the Eu³⁺ 4f-4f excitation intensity ratio in Sr₃Lu(VO₄)₃:Eu³⁺ and CaWO₄:Nd³⁺

Qianyang Chang, Xianju Zhou, Xiao Zhou, Lingni Chen, Guotao Xiang, Sha Jiang, Li Li, Yanhong Li, and Xiao Tang
Opt. Lett. 45(13) 3637-3640 (2020)

Effects of persistent luminescence decay on mechanoluminescence phenomena of SrAl₂O₄:Eu²⁺, Dy³⁺ materials

Mohammad Reza Rahimi, Gun Jin Yun, Gary L. Doll, and Jun-Seong Choi
Opt. Lett. 38(20) 4134-4137 (2013)

Persistent phosphor SrAl₂O₄:Eu,Dy in outdoor conditions: saved by the trap distribution

Jonas Botterman and Philippe F. Smet
Opt. Express 23(15) A868-A881 (2015)