Dy3+,Eu3+共掺杂双钙钛矿Ca2GdNbO6荧光温度计荧光粉

IF 3.6 3区 物理与天体物理 Q2 OPTICS
Yutian Zhang, Lianjie Li, Junyu Chen, Hai Guo
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引用次数: 0

摘要

基于镧系掺杂荧光粉的荧光温度计以其响应快、灵敏度高、非接触方式和广泛的应用场景,具有广阔的应用前景。但是,它们的相对灵敏度受到固定热耦合能级的限制。本文制备了具有双发射中心的Ca2GdNbO6:Dy3+,Eu3+样品作为基于非热耦合能级的荧光温度计。在393.5 nm激发下,可以同时检测到CGNO中Dy3+、Eu3+的特征发射。此外,CGNO:Dy3+,Eu3+荧光粉在依赖于Eu3+的荧光强度(FI)和依赖于双发射中心的荧光强度比(FIR)方面表现出优异的温度传感性能。在703 nm处,FI在426 K时的最大相对灵敏度(SRmax)为1.61%,在616 nm和576 nm处,FI在391 K时的最大相对灵敏度为1.01%,在703 nm和576 nm处,FI在501 K时的最大相对灵敏度为2.18%。这些发现表明Ca2GdNbO6:Dy3+,Eu3+样品是荧光温度计的主要候选者。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dy3+,Eu3+ co-doped double perovskite Ca2GdNbO6 phosphors for fluorescent thermometer
Fluorescent thermometers based on lanthanide-doped phosphors have broad application prospect because of their quickly response, highly sensitivity, non-contact mode and widely application scenarios. However, their relative sensitivity is limited by fixed thermal coupling energy level. Herein, Ca2GdNbO6:Dy3+,Eu3+ samples possessing dual-emission centers were fabricated as fluorescence thermometers based non-thermal coupling energy level. When excited by 393.5 nm, the characteristic emissions from Dy3+ and Eu3+ in CGNO:Dy3+,Eu3+ can be simultaneously detected. Furthermore, CGNO:Dy3+,Eu3+ phosphors exhibit excellent temperature sensing performance in fluorescence intensity (FI) relied on Eu3+ and fluorescence intensity ratio (FIR) relied on dual-emission centers. The maximum relative sensitivities (SRmax) reach 1.61 %K−1 at 426 K for FI at 703 nm, 1.01 %K−1 at 391 K for FIR of FI at 616 nm and FI at 576 nm, and 2.18 %K−1 at 501 K for FIR of FI at 703 nm and FI at 576 nm, respectively. These findings demonstrate that Ca2GdNbO6:Dy3+,Eu3+ samples are prime candidates for fluorescent thermometers.
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来源期刊
Journal of Luminescence
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.
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