Version 1
: Received: 23 February 2019 / Approved: 26 February 2019 / Online: 26 February 2019 (12:45:04 CET)
How to cite:
Hu, Y.; Yang, Y.; Li, X.; Wang, X.; Li, Y.; Li, T.; Zhang, H. Super Long Green Persistent Luminescence from X-Ray Excited β-NaYF4: Tb3+. Preprints2019, 2019020241. https://doi.org/10.20944/preprints201902.0241.v1
Hu, Y.; Yang, Y.; Li, X.; Wang, X.; Li, Y.; Li, T.; Zhang, H. Super Long Green Persistent Luminescence from X-Ray Excited β-NaYF4: Tb3+. Preprints 2019, 2019020241. https://doi.org/10.20944/preprints201902.0241.v1
Hu, Y.; Yang, Y.; Li, X.; Wang, X.; Li, Y.; Li, T.; Zhang, H. Super Long Green Persistent Luminescence from X-Ray Excited β-NaYF4: Tb3+. Preprints2019, 2019020241. https://doi.org/10.20944/preprints201902.0241.v1
APA Style
Hu, Y., Yang, Y., Li, X., Wang, X., Li, Y., Li, T., & Zhang, H. (2019). Super Long Green Persistent Luminescence from X-Ray Excited β-NaYF<sub>4</sub>: Tb<sup>3+</sup>. Preprints. https://doi.org/10.20944/preprints201902.0241.v1
Chicago/Turabian Style
Hu, Y., Tianyi Li and Hongwu Zhang. 2019 "Super Long Green Persistent Luminescence from X-Ray Excited β-NaYF<sub>4</sub>: Tb<sup>3+</sup>" Preprints. https://doi.org/10.20944/preprints201902.0241.v1
Abstract
Here, we have discovered a X-ray excited long afterglow phosphor β-NaYF4: Tb3+. After the irradiation of X-ray, the green emission can persist for more than 240 h. After 36 h, the afterglow intensity arrived at 0.69 mcd•m-2, which can clearly be observed by naked eyes. Even after 84 h, the afterglow emission brightness still reached 0.087 mcd•m-2. Also, combined with the results of thermoluminescence and photoluminescence, the super long afterglow emission of β-NaYF4: Tb3+ can be ascribed to the tunneling model associated with F centers. More importantly, the super long green afterglow emission of β-NaYF4: Tb3+ has been successfully used as in vivo light source to activate g-C3N4 for photodynamic therapy（PDT）and bacteria destruction. Furthermore, super long persistent luminescence of β-NaYF4: Tb3+ could be repeatedly charged by X-ray for many circulations, which indicates that the phosphors have high photo stability under repeated cycles of alternating X-ray irradiation.
Keywords
Long afterglow; tunneling model; F centers; PDT
Subject
Physical Sciences, Optics and Photonics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
