Abstract
We report a persistent luminescence phenomenon of ScPO4:Gd3+ phosphor, which exhibits long-lasting ultraviolet emission peaking at 313 nm after the end of X-ray irradiation. Unlike the steady-state luminescence of the phosphor excited by ionizing irradiation, no quantum-cutting emission is involved in the persistent luminescence. We ascribe the presence of persistent luminescence, as well as the absence of quantum cutting, to the effect of self-trapped exciton on the electron and energy transfers. This work provides some insights to the understanding of Gd3+-activated ultraviolet persistent luminescence.
Original language | English |
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Article number | 119511 |
Journal | Journal of Luminescence |
Volume | 254 |
DOIs | |
State | Published - Feb 2023 |
Keywords
- Gd
- Quantum cutting
- Self-trapped exciton
- Ultraviolet persistent luminescence