| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7840068 | Journal of Luminescence | 2018 | 7 Pages |
Abstract
Ce3+ co-doped Sr2GdF7:Yb3+/Ho3+ transparent oxyfluoride glass ceramics were successfully fabricated through melt-quenching technique, which were further confirmed by intense diffraction peaks of X-ray diffraction, transmission electron microscopy, selected area electron diffraction, obvious Stark splitting of emission spectra and prolonged lifetimes of Ho3+ after crystallization. Under 980â¯nm excitation, green upconversion emission is dominant in Sr2GdF7:Yb3+/Ho3+ glass ceramics and is about 10,000 times stronger than that in precursor glass. Furthermore, upconversion emission tuning from green to red in Sr2GdF7:Yb3+/Ho3+ glass ceramics was obtained via codoping Ce3+ ions with different concentrations. Impressively, red to green fluorescence intensity ratio increases from 0.1 to 91, which is caused by two efficient cross-relaxation processes derived from Ho3+ and Ce3+ ions. The current study on the multicolor tuning behavior of Ce3+ doped Sr2GdF7:Yb3+/Ho3+ glass ceramics offers a potential application in color displays.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Fangfang Hu, Jinjiao Zhang, Olga Giraldo, Weihui Song, Rongfei Wei, Min Yin, Hai Guo,