Open AccessNear infrared light excited sensors NaYbF4@ NaYF4
Author(s) -
Yanjie Huang,
Jinyan Zhou,
Zhanlin Chen,
Can Ke,
Xiaojing Li,
Zhenyu Huang,
Keng Lin,
Yuan Wang,
Yan Guan
Publication year - 2019
Publication title -
iop conference series earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/300/5/052005
Subject(s) - excited state , luminescence , atmospheric temperature range , materials science , analytical chemistry (journal) , ytterbium , calibration , iridium , atomic physics , chemistry , optoelectronics , physics , doping , thermodynamics , biochemistry , chromatography , quantum mechanics , catalysis
The luminescence and temperature response characteristics of NaYF 4 containing 15% NaYBF 4 were investigated. NaYbF 4 @ NaYF 4 has good thermal stability and excellent response characteristics in the temperature in the range from 300 to 500 K, which significantly increases the upper limit of temperature detection of ytterbium temperature sensor. A self-calibration relationship between the reciprocal of temperature and the natural logarithm ratio of luminescent intensity has been discovered. Compared with the values of ln( I 1048 / I 967 ) or ln ( I 947 / I 967 ) in Yb 3+ emission spectra, the relationship between ln ( I 990 / I 967 ) and 1/ T is not linear, but exponential attenuation relationship with better temperature resolution near 400 K. Oxygen has no influence on these relations because of the ordered and dense crystal structure, which leading to the separation of Yb 3+ and oxygen.
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