Effect of Anionic Group [SiO4]4-/[PO4]3- on the Luminescence Properties of Dy3+-Doped Tungstate Structural Compounds
The novel scheelite structures of Li2Ca(WO4)2 , Li2Ca2(WO4)(SiO4), and LiCa2(WO4)(PO4) fluorescent materials were successfully prepared using a high-temperature solid-phase method. The compounds were characterized by XRD, EDS, and XRF. The test results showed that the substitution of [WO4]2- by [SiO4]4- /[PO4]3- tetrahedron in tungstate had no significant influence on the crystal structure of the Li2Ca(WO4)2. When Dy3+ ions were introduced as an activator at an optimum doping concentration of 0.08% mol, all of the as-prepared phosphors generated yellow light emissions, and the emission peak was located close to 576 nm. Replacing [WO4]2- with [SiO4]4- /[PO4]3- tetrahedron significantly increased the luminescence of the Li2Ca(WO4)2 phosphors. In addition, the LiCa2(WO4)(PO4):zDy3+ phosphors had the best luminescence properties, decay life (τ = 0.049 ms), and thermal stability (87.8%).
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Due to technical limitations, full-text HTML conversion of this manuscript could not be completed. However, the manuscript can be downloaded and accessed as a PDF.
Posted 22 Dec, 2020
On 05 Jan, 2021
Received 02 Jan, 2021
Received 21 Dec, 2020
On 20 Dec, 2020
On 19 Dec, 2020
Invitations sent on 18 Dec, 2020
On 15 Dec, 2020
On 15 Dec, 2020
On 15 Dec, 2020
On 14 Dec, 2020
Effect of Anionic Group [SiO4]4-/[PO4]3- on the Luminescence Properties of Dy3+-Doped Tungstate Structural Compounds
Posted 22 Dec, 2020
On 05 Jan, 2021
Received 02 Jan, 2021
Received 21 Dec, 2020
On 20 Dec, 2020
On 19 Dec, 2020
Invitations sent on 18 Dec, 2020
On 15 Dec, 2020
On 15 Dec, 2020
On 15 Dec, 2020
On 14 Dec, 2020
The novel scheelite structures of Li2Ca(WO4)2 , Li2Ca2(WO4)(SiO4), and LiCa2(WO4)(PO4) fluorescent materials were successfully prepared using a high-temperature solid-phase method. The compounds were characterized by XRD, EDS, and XRF. The test results showed that the substitution of [WO4]2- by [SiO4]4- /[PO4]3- tetrahedron in tungstate had no significant influence on the crystal structure of the Li2Ca(WO4)2. When Dy3+ ions were introduced as an activator at an optimum doping concentration of 0.08% mol, all of the as-prepared phosphors generated yellow light emissions, and the emission peak was located close to 576 nm. Replacing [WO4]2- with [SiO4]4- /[PO4]3- tetrahedron significantly increased the luminescence of the Li2Ca(WO4)2 phosphors. In addition, the LiCa2(WO4)(PO4):zDy3+ phosphors had the best luminescence properties, decay life (τ = 0.049 ms), and thermal stability (87.8%).
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Due to technical limitations, full-text HTML conversion of this manuscript could not be completed. However, the manuscript can be downloaded and accessed as a PDF.