Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7885874 | Ceramics International | 2018 | 18 Pages |
Abstract
Transparent bulk glass ceramics (GCs) containing βâNaYF4:Yb3+/Er3+ upconversion nanocrystals were successfully prepared via a new sol-gel route for the first time. The structure, composition and morphology of the as-fabricated glass ceramics are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), which confirm the segregation of β-NaYF4 nanocrystals in silica glass matrix with the maintenance of their crystalline phase and microstructure. More significantly, intense upconversion (UC) emissions can be realized for Yb3+/Er3+ co-doped glass ceramics by profiting from low-phonon-energy environment of erbium ions in β-NaYF4 nanophase. Furthermore, temperature-dependent UC emission performance of the present GC is systematacially investigated to explore their potential application in optical thermometry. Obviously, owing to intense UC emissions of βâNaYF4:Yb3+/Er3+ nanocrystals and high transparency, superior chemical/mechanical stability of oxide glassy matrix, the as-fabricated GCs exhibit good temperature sensing performance and good thermostability for precise temperature detecting. It is expected that the preliminary research can give a reference for designing new transparent bulk GCs and may exploit a valid method for developing high-performance optical temperature sensors.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Mingye Ding, Chunhua Lu, Le Chen, Wangfeng Bai, Yongjun Yuan, Zhenguo Ji,