Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 231, Issue -, Pages 641-645Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.03.082
Keywords
Temperature sensing; Thermal population; Combustion method
Funding
- National Key Basic Research Program of China [2013CB921800]
- National Natural Science Foundation of China [11374291, 11274299, 11574298]
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The thermal coupling property of the ground state F-7(0) and its adjacent thermally-excited state 7F2 of Eu3' ion was firstly discussed and a new temperature sensing mechanism was proposed based on the thermal population of F-7(2) state in Y2O3 : 5% Eu3+ powder sample. Under a constant 611.2 nm excitation, the fluorescence originating from 5D0 state increases monotonously as the temperature rises in the region from 150 K to 300 K. The reason leading to this temperature-dependent fluorescence behavior was analyzed in detail. It is demonstrated that this present work provides a new mechanism for non-contact optical thermometry. (C) 2016 Elsevier B.V. All rights reserved.
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