Journal
JOURNAL OF LUMINESCENCE
Volume 202, Issue -, Pages 414-419Publisher
ELSEVIER
DOI: 10.1016/j.jlumin.2018.06.007
Keywords
Photo-stimulated luminescence; Luminescence; Traps; Tunneling; Phosphors
Categories
Funding
- National Nature Science Foundation of China [61565009, 11664022]
- Foundation of Natural Science of Yunnan Province [2016FB088]
- Reserve Talents Project of Yunnan Province [2017HB011]
- Young Talents Support Program of Faculty of Materials Science and Engineering, Kunming University of Science and Technology [14078342]
- Scientific and Technological Research Program of Chongqing Municipal Education Commission [KJ1711277]
- Yongchuan Natural Science Foundation (Ycstc) [2017nc4001]
Ask authors/readers for more resources
A novel green-emitting phosphor Ba2Ga2GeO7: Tb3+, Bi3+ was successfully synthesized by solid-state reaction. The photoluminescence (PL), photo-stimulated luminescence (PSL) and long persistent luminescence (LPL) were investigated in detail. After pre-irradiation upon UV light, the PSL spectrum of Ba2Ga2GeO7: Tb3+, Bi3+ exhibits peaks centered at 493, 547, 589, and 627 nm under excitation at 980 nm, ascribed to the transitions of D-5(4)-> F-7(j) (j = 3, 4, 5, 6) by tunneling process. While PL spectrum exhibits peaks related to the transitions of D-5(3), D-5(4) -> F-7(j) (j = 3, 4, 5, 6). Thermo-luminescence (TL) curve shows that a large amount of traps can be in Ba2Ga2GeO7: Tb3+ by induced Bi3+, leading to the improvement of PSL spectra performance. These findings open a vista of possible avenues for the understanding of the PSL process.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
