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

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外文摘要：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.

外文关键词：

Double halide perovskiteRare earthsNear-infrared emissionMulti-mode thermometryUp-conversion luminescence980 and 405 nm laser co-excitation

作者：

Shuang Zhao、Jinpeng Zou、Hanqi Xu、Qichuan Hu、Qiuju Han、Wenzhi Wu

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作者单位：

School of Electronic Engineering,Heilongjiang University,Harbin,150080,China

School of Arts and Sciences,Northeast Agricultural University,Harbin,150030,China

基金：

Heilongjiang Provincial Key Laboratory of Micronano Sensitive Devices and Systems,Basic Research Project for Outstanding YouCultivation Project of Double Firstclass Initiative Discipline by Heilongjiang Province

项目编号：

YQJH2023128LJGXCG2022-061

出版年：

2024

DOI：

10.1016/j.jre.2024.01.017

稀土学报(英文版)

中国稀土学会

稀土学报(英文版)

CSTPCDEI

影响因子：1.3

ISSN：1002-0721

年,卷(期)：2024.42(11)