Broad-scope dual-mode modulation thermometry based on up-conversion phosphor GaNbO4: Yb3+/Er3+ |
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| Affiliation: | 1. College of Physics, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao, 266071, China;2. National Demonstration Center for Experiment Applied Physics Education (Qingdao University), Qingdao, 266071, China;3. Shandong Provincial University Key Laboratory of Optoelectrical Material Physics and Devices, Qingdao, 266071, China;4. Weihai Innovation Research Institute of Qingdao University, Weihai, 264200, China;1. Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan, ROC;2. Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan, ROC;3. Advanced Research Center for Green Materials Science and Technology, Taipei, 10617, Taiwan, ROC;1. Key Laboratory of Inorganic Coating Materials CAS, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China;2. College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China;3. Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing, Yantai, 264006, Shandong, China;4. Avic Manufacturing Technology Institute, Beijing, 100024, China;1. Optical Materials & Bio-imaging Research Laboratory, Department of Physics, Indian Institute of Technology (Indian School of Mines) Dhanbad 826004, India;2. Laser and Spectroscopy Laboratory, Department of Physics, Indian Institute of Technology (Indian School of Mines) Dhanbad 826004, India;1. College of Physics, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao 266071, China;2. National Demonstration Center for Experiment Applied Physics Education (Qingdao University), Qingdao 266071, China;3. Weihai Innovation Research Institute of Qingdao University, Weihai 264200, China |
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| Abstract: | Fluorescence temperature measurement technology has set off another upsurge in non-contact temperature measurement, but still suffers from the large error for single-mode thermometry. Herein, in a broad temperature range of 93–633 K, a dual-mode modulation thermometry based on up-conversion phosphor of GaNbO4:Yb3+/Er3+ is realized with the maximum relative sensitivity (Sr) of 11.7% K?1 (93 K) and 13.1% K?1 (123 K), respectively. GaNbO4:Yb3+/Er3+ phosphors were synthesized by high temperature solid-state method. The structure, surface morphology and the optical properties were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence (PL). The fluorescence intensity ratio (FIR) readout method based on Er3+ thermal-coupled energy level (TCL) and non-thermal-coupled energy level (NTCL) was used to achieve the dual-mode temperature measurement with high temperature resolution and good repeatability in GaNbO4:5 mol% Yb3+ and 5 mol% Er3+ phosphors. All the results show that GaNbO4:Yb3+/Er3+ phosphors have great application potential in high sensitivity broadband thermometry. |
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| Keywords: | Up-conversion Wide range High sensitivity Dual-mode optical thermometry |
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