Energy transfer process in a rare earth (Ce3+ , Dy3+ , Sm3+ )-doped nanocrystalline phosphate phosphor.
Luminescence
; 37(6): 1009-1017, 2022 Jun.
Article
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| MEDLINE
| ID: mdl-35404541
ABSTRACT
This work presents the optimized luminescence spectra for the Ce3+ ,Sm3+ -doped NaSrPO4 phosphor that was synthesized using a wet chemical method. Ce3+ and Sm3+ are activator impurities that show spectral splitting bands that corresponds to the d-f and f-f transitions, respectively. These impurity elements shows the characteristics spectral bands when doped with the NaSrPO4 host lattice. Spectral splitting in the Ce3+ excitation band was monitored in the 240-340 nm range, in which the observed bands were located at 269 nm, 292 nm and 321 nm, and emission bands were observed in the broad spectral range 330-430 nm. However, when Sm3+ ion was doped in the same host lattice we obtained a characteristic emission band at 590 and 645 nm in the orange-red region, under sharp excitation bands located at 345, 361, 375, and 403 nm respectively. Also, we carried out energy transfer analysis in the Ce3+ /Dy3+ -doped NaSrPO4 phosphor. Further crystalline phase and the nanophase nature of the phosphor compound were confirmed using X-ray diffraction and transmission electron microscopy analyses.
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Bases de datos:
MEDLINE
Idioma:
En
Revista:
Luminescence
Asunto de la revista:
BIOFISICA
/
BIOQUIMICA
Año:
2022
Tipo del documento:
Article
País de afiliación:
India