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- Title
Wide-range thermometry and up-conversion luminescence of Ca<sub>5</sub>(PO<sub>4</sub>)<sub>3</sub>F:Yb<sup>3+</sup>/Er<sup>3+</sup> transparent glass ceramics.
- Authors
Liu, Xiangyu; Chen, Yong; Shang, Fei; Chen, Guohua; Xu, Jiwen
- Abstract
Ca5(PO4)3F:Yb3+/Er3+ glass ceramics (GCs) were successfully manufactured via traditional controlled crystallization method. The structural, optical and up-conversion (UC) illuminant properties were systemically investigated by XRD, TEM, HRTEM, fluorescence spectra and luminescence lifetime measurements. The results show that Ca5(PO4)3F:Yb3+/Er3+ nanocrystals has been precipitated from the precursor glass matrix and the UC luminescence mechanism of PG and GC660 is two-photon process. The enhanced UC emission intensity and extended lifetime of Er3+ is observed in the GCs. Using the temperature dependent fluorescence intensity ratio (FIR) of thermally coupled emitting states (4S3/2, 2H11/2) as thermometric index, Ca5(PO4)3F:Yb3+/Er3+ GCs present wide temperature-sensing range (298-798 K) and high absolute sensitivity (51.9 × 10−4 K−1 at 600 K). This finding suggests that Ca5(PO4)3F:Yb3+/Er3+GC materials are promising in optical temperature measurement field.
- Subjects
CALCIUM; YTTERBIUM; ERBIUM; NANOCRYSTALS; PHOTONS
- Publication
Journal of Materials Science: Materials in Electronics, 2019, Vol 30, Issue 6, p5718
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-019-00865-5