Luminescent enhancement and multi-mode optical thermometry of erbium doped halide Cs2(Na/Ag)BiCl6 microcrystals

IF 7.2 1区化学 Q1 CHEMISTRY, APPLIED Journal of Rare Earths Pub Date : 2024-11-01 Epub Date: 2024-02-06 DOI:10.1016/j.jre.2024.01.017

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Abstract

Lanthanum-doped double halide perovskite has attracted increasing interest due to its distinctive up-conversion and near-infrared (NIR) luminous characteristics. Here, erbium ion (Er³⁺) doped Cs₂(Na/Ag)BiCl₆ microcrystals (MCs) were synthesized and proved to be one of the most prospective candidates for optical thermometry. The enhancement of both white light from self-trapped exciton emission and NIR emission from Er³⁺ ion of Cs₂AgBiCl₆ microcrystals is caused by lattice distortion due to Na⁺ ion doping. Fluorescence intensity ratio and lifetime methods provide self-referenced and sensitive thermometry under 405 and/or 980 nm laser excitation at the temperatures from 80 to 480 K. Besides, the maximum values of relative and absolute sensitivity of 3.62%/K and 27%/K can be achieved in the low to high temperature range under 980 and 405 nm laser co-excitation. Through the experimental analysis, Er³⁺ doped Cs₂(Na/Ag)BiCl₆ double perovskite is considered to be an ideal self-calibrating thermometric material due to its good long-term stability and multi-mode function of excitation and detection.

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掺铒卤化物 Cs2(Na/Ag)BiCl6微晶的发光增强和多模式光学测温仪

掺杂镧系元素的双卤化物透辉石因其独特的上转换和近红外（NIR）发光特性而引起了越来越多的关注。本文合成了掺杂铒离子（Er3+）的 Cs2（Na/Ag）BiCl6 微晶（MCs），并证明它是最有前景的光学测温候选材料之一。Cs2AgBiCl6 微晶自俘获激子发射的白光和 Er3+ 离子发射的近红外光的增强是由 Na+ 离子掺杂导致的晶格畸变引起的。在 405 和/或 980 nm 激光激发下，在 80 至 480 K 温度范围内，荧光强度比和寿命方法提供了自参照和灵敏的测温方法；在 980 和 405 nm 激光共激发下，在低温至高温范围内，相对灵敏度和绝对灵敏度的最大值分别为 3.62%/K 和 27%/K。通过实验分析，掺杂 Er3+ 的 Cs2（Na/Ag）BiCl6 双包晶石具有良好的长期稳定性和多模式激发与检测功能，被认为是一种理想的自校准测温材料。

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文献相关原料

公司名称

产品信息

麦克林

Bismuth chloride (BiCl3)

麦克林

Sodium chloride (NaCl)

麦克林

Silver chloride (AgCl)

阿拉丁

Cesium chloride (CsCl)

来源期刊

Journal of Rare Earths 化学-应用化学

CiteScore

8.70

自引率

14.30%

发文量

374

审稿时长

1.7 months

期刊介绍： The Journal of Rare Earths reports studies on the 17 rare earth elements. It is a unique English-language learned journal that publishes works on various aspects of basic theory and applied science in the field of rare earths (RE). The journal accepts original high-quality original research papers and review articles with inventive content, and complete experimental data. It represents high academic standards and new progress in the RE field. Due to the advantage of abundant RE resources of China, the research on RE develops very actively, and papers on the latest progress in this field emerge every year. It is not only an important resource in which technicians publish and obtain their latest research results on RE, but also an important way of reflecting the updated progress in RE research field. The Journal of Rare Earths covers all research and application of RE rare earths including spectroscopy, luminescence and phosphors, rare earth catalysis, magnetism and magnetic materials, advanced rare earth materials, RE chemistry & hydrometallurgy, RE metallography & pyrometallurgy, RE new materials, RE solid state physics & solid state chemistry, rare earth applications, RE analysis & test, RE geology & ore dressing, etc.