Characterization of Luminescent Li3Ba2Gd3Mo8O32:Tb3+ Phosphors Prepared via Sol–Gel Method
Luminescent Li 3 Ba 2 Gd 3 Mo 8 O 32 :Tb 3+ phosphors were synthesized using the sol–gel method, and extensively characterized through various spectroscopic techniques, including x-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared (FT-IR) spectroscopy, photolumine...
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Veröffentlicht in: | Journal of electronic materials 2024-07, Vol.53 (7), p.3723-3732 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Luminescent Li
3
Ba
2
Gd
3
Mo
8
O
32
:Tb
3+
phosphors were synthesized using the sol–gel method, and extensively characterized through various spectroscopic techniques, including x-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared (FT-IR) spectroscopy, photoluminescence (PL) excitation, and emission. SEM micrographs revealed the irregular and non-uniform morphology and size of the prepared phosphors. The FT-IR spectra offered insights into the functional groups and bonding within the phosphor. The PL excitation spectra at a 545 nm emission wavelength displayed a slight shift in peak positions with a prominent peak at 283 nm, corresponding to the characteristic 4f
8
→ 4f
7
5d
1
transitions of Tb
3+
ions, while under excitation at
λ
exc
= 283 nm, PL emission spectra exhibited distinct peaks associated with
5
D
4
→
7
F
j
(
j
= 6, 5, 4, 3) transitions. Notably, the transition
5
D
4
→
7
F
5
at 545 nm demonstrated strong and particularly high intensity in the Li
3
Ba
2
Gd
3
Mo
8
O
32
:0.09Tb
3+
phosphor. Photometric analysis showed the potential of this phosphor to serve as a vivid green light source for various display applications. The Li
3
Ba
2
Gd
3
Mo
8
O
32
:Tb
3+
phosphor may be used for creating sensors for environmental monitoring. Future research could explore its biocompatibility for biomedical applications and improve its targeting and photostability. |
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ISSN: | 0361-5235 1543-186X |
DOI: | 10.1007/s11664-024-11144-3 |