首页|A ratiometric optical thermometer with dual-color emission based on Eu2+-doped CsCu2I3 microcrystals

A ratiometric optical thermometer with dual-color emission based on Eu2+-doped CsCu2I3 microcrystals

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
With the increasing demand for non-contact fluorescence intensity ratio-based optical thermometry,novel phosphor materials with high-efficiency,dual-emitting centers,and differentiable temperature sensitivity are highly desired.In this work,rare earth Eu2+ions were incorporated into CsCu2I3 microcrystals by solid-state reaction.Under a single UV excitation,the as-synthesized samples exhibit two emissions:452 nm blue emission from the 5d→4f transition of Eu2+and 582 nm yellow emission from self-trapped exciton emission of CsCu2I3.The photoluminescence quantum yield reaches to 50％.The dual-band emission of Eu2+-doped CsCu2I3 shows different temperature responses in the range of 260-360 K.Based on fluo-rescence intensity ratio technology,the maximum absolute sensitivity and relative sensitivity are 0.091 K-1(at 360 K)and 2.60％/K(at 260 K),respectively.These results suggest that Eu2+-doped CsCu2I3 could be a good candidate for highly sensitive optical thermometer.

CsCu2I3Eu2+-dopingFluorescence intensity ratioOptical thermometerRare earths

Xiaorong Li、Ge Gao、Kaiyu Wang、Zhaoqiong Chen、Zejiang Gao、Qingyong Qin、Li Chen、Bingsuo Zou

展开 >

State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures,School of Physical Science and Technology,Guangxi University,Nanning,530004,China

School of Resources,Environments and Materials,Guangxi University,Nanning,530004,China

National Natural Science Foundation of ChinaNatural Science Foundation of GuangxiScience and Technology Agency of GuangxiEducation Department of Guangxi

622050722022GXNSFBA035656GuikeAD201590542019KY0004

2024

10.1016/j.jre.2023.07.016

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(8)
  • 1