Journal
MATERIALS LETTERS
Volume 218, Issue -, Pages 337-340Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.02.007
Keywords
Sensors; Nanocrystalline materials; Luminescence; Thermal properties
Funding
- National Natural Science Foundation of China [61628501, 61377060, 61077039, 50872089]
- Tianjin Science and Technology Commission of China [16JCZDJC37400]
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We report a nano-thermometer based on ratiometric method of green 530 and 550 nm luminescence of Er3+/Yb3+-codoped NaGd(WO4)(2) nanocrystals for temperature sensing of biological tissues and cells. The thermometer has simple structure and displays excellent sensing performance with a relative sensitivity 1.2% K (1), a thermal resolution 0.5 K at the physiological temperature 310 K, and a large signal-to-noise ratio. In parallel, the luminescence temperature characteristics were also studied by a spectrometer, and consistent results were obtained. (c) 2018 Elsevier B. V. All rights reserved.
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