Characterization of Luminescent Li3Ba2Gd3Mo8O32:Tb3+ Phosphors Prepared via Sol–Gel Method.
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| Title: | Characterization of Luminescent Li |
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| Authors: | Singh, Vijay1 (AUTHOR) vijayjiin2006@yahoo.com, Rao, B. R. V.2 (AUTHOR), Bhat, Aadil Ahmad1 (AUTHOR), Devi, Ch. B. Annapurna3 (AUTHOR), Rao, A. S.4 (AUTHOR), Joo, Ji Bong1 (AUTHOR) |
| Source: | Journal of Electronic Materials. Jul2024, Vol. 53 Issue 7, p3723-3732. 10p. |
| Subjects: | Terbium, Luminescence spectroscopy, Sol-gel processes, Excitation spectrum, Phosphors, Light sources, Scanning electron microscopy, Environmental monitoring |
| Abstract: | Luminescent Li3Ba2Gd3Mo8O32:Tb3+ 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 4f8 → 4f75d1 transitions of Tb3+ ions, while under excitation at λexc = 283 nm, PL emission spectra exhibited distinct peaks associated with 5D4 → 7Fj (j = 6, 5, 4, 3) transitions. Notably, the transition 5D4 → 7F5 at 545 nm demonstrated strong and particularly high intensity in the Li3Ba2Gd3Mo8O32:0.09Tb3+ phosphor. Photometric analysis showed the potential of this phosphor to serve as a vivid green light source for various display applications. The Li3Ba2Gd3Mo8O32:Tb3+ 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. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | Luminescent Li3Ba2Gd3Mo8O32:Tb3+ 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 4f8 → 4f75d1 transitions of Tb3+ ions, while under excitation at λexc = 283 nm, PL emission spectra exhibited distinct peaks associated with 5D4 → 7Fj (j = 6, 5, 4, 3) transitions. Notably, the transition 5D4 → 7F5 at 545 nm demonstrated strong and particularly high intensity in the Li3Ba2Gd3Mo8O32:0.09Tb3+ phosphor. Photometric analysis showed the potential of this phosphor to serve as a vivid green light source for various display applications. The Li3Ba2Gd3Mo8O32:Tb3+ 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. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 03615235 |
| DOI: | 10.1007/s11664-024-11144-3 |
