Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 246, Issue -, Pages 175-180Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2017.02.030
Keywords
Microwave-assisted hydrothermal reaction; Temperature quenching; Temperature sensing; Fluorescence intensity ratio; Laser induced thermal effect
Funding
- NSFC (National Natural Science Foundation of China) [11104024, 11374044]
- Natural Science Foundation of Liaoning Province [2015020190]
- High-level personnel in Dalian innovation support program [2016RQ037]
- Open Fund of the State Key Laboratory on Integrated Optoelectronics [IOSKL2015KF27]
- Fundamental Research Funds for the Central Universities [3132016122, 3132016333]
- Natural Science Foundation of Zhejiang Province [LZ17E020001]
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Rare earth doped materials can usually achieve high efficiency upconversion luminescence (UCL) under high power density infrared laser excitation, in which process the heat generation cannot be avoided, and then induce temperature dependent UCL quenching. This paper dealt with the temperature sensing property and 1550 nm laser irradiation induced thermal effect of Er3+/Yb3+ co-doped NaYF4 microcrystals. The sample was synthesized via a microwave-assisted hydrothermal route, and its crystal structure and microscopic morphology were characterized by means of XRD and FE-SEM. To describe the temperature quenching behaviors for the two typical green emissions of Er3+, a model was proposed and well explained the temperature dependence of two green UCL intensities. Temperature sensing property for NaYF4: Er3+/Yb3+ microcrystals were studied by fluorescence intensity ratio technique, and the temperature sensitivity were also obtained. Furthermore, the 1550 nm laser induced thermal effect was studied, and the result showed that the sample temperature increased with increasing excitation power density. (C) 2017 Elsevier B.V. All rights reserved.
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