Synthesis and study of optical properties of a Gd3+-doped NaYF4 phosphor for phototherapy lamp application.
Luminescence
; 39(4): e4736, 2024 Apr.
Article
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| MEDLINE
| ID: mdl-38590043
ABSTRACT
In recent trends, radiation falls under the narrowband ultraviolet-B region (305-315 nm) widely used in phototherapy lamp applications in the treatment of skin diseases. In this paper, we report a Gd3+-doped NaYF4 luminescent material synthesized for the first time using the low-temperature co-precipitation method. It crystallized into a face-centred cubic structure, as confirmed by X-ray diffraction characterization techniques and Rietveld refinement. The photoluminescence property of the as-prepared sample shows a highly intense, sharp emission band obtained at 311 nm, which belongs to the narrowband ultraviolet-B region and corresponds to the transition of the 6P7/2â8S7/2 level of the Gd3+ ions under 272 nm excitation (8S7/2 to 6IJ). The transitions of the Gd3+ ions are detected entirely with different concentrations of Gd3+ ions. Scanning electron microscopy analysis indicated that the average particle was 288 nm. The critical distance for energy transfer was calculated to be equal to 11.5017 Å. Dipole-dipole interaction is responsible for energy transfer, as analyzed by Dexter theory. These excellent optical characteristics, together with their highly efficient and low-cost synthesis approach, indicate that synthesized NaYF4Gd3+ phosphors have excessive potential for phototherapeutic lamp applications.
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Banco de datos:
MEDLINE
Asunto principal:
Fototerapia
/
Luminiscencia
Idioma:
En
Año:
2024
Tipo del documento:
Article