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- W2949174817 abstract "In this work, we designed and successfully synthesized a novel germanate-based persistent luminescence (PersL) phosphor host, CaMgGe2O6, via a solid-state reaction. We constructed an empirical energy level scheme of the CaMgGe2O6:Ln2+/Ln3+ phosphors according to the Dorenbos model. Then, we successfully theoretically predicted the choice of the optimal codopant of CaMgGe2O6:Mn2+ phosphors using this empirical energy level scheme. As a result, after co-doping with Sm3+, the PersL intensity is increased 16 times and the time duration is effectively improved 52 times due to the high concentration of new traps. CaMgGe2O6:Mn2+,Sm3+ shows red to near-infrared long persistent emission located at 675 nm, which can be sustained for about 60 minutes above the recognizable intensity level (≥0.32 mcd m-2), and the persistence duration of samples was three times that of the red commercial phosphor Y2O2S:Eu3+. The experimental results coincide well with the theoretical predictions. These results demonstrate that the strategy concepts of this work are feasible for the design of persistent luminescence materials. Moreover, a possible afterglow mechanism is studied and discussed with the assistance of thermoluminescence (TL) curves." @default.
- W2949174817 created "2019-06-27" @default.
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- W2949174817 date "2019-01-01" @default.
- W2949174817 modified "2023-10-14" @default.
- W2949174817 title "Designing a novel red to near-infrared persistent phosphor CaMgGe<sub>2</sub>O<sub>6</sub>:Mn<sup>2+</sup>,Sm<sup>3+</sup>based on a vacuum referred binding energy diagram" @default.
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- W2949174817 doi "https://doi.org/10.1039/c9dt01384a" @default.
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- W2949174817 hasPublicationYear "2019" @default.
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