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Energy Transfer from Pr to Gd and Upconversion Photoluminescence Properties of YOF:Pr, Gd. | LitMetric
Upconversion materials have numerous potential applications in light energy utilization due to their unique optical properties. The use of visible light excitation to obtain ultraviolet emission is a promising technology with broad application prospects, while relevant research is absent. A series of Pr, Gd doped YOF phosphors were synthesized by traditional solid-state reaction. X-ray diffraction, scanning electronic microscopy, steady-state photoluminescence spectra, a decay dynamic, and upconversion emission spectra of the samples were studied. Under the excitation of 238 nm, the energy transfer from Pr to Gd was realized and a strong ultraviolet B emission due to the P→S transition of the Gd ions was achieved. Under the excitation of a 450 nm blue laser, Pr absorbed two blue photons to realize the upconversion process and then transferred the energy to Gd to obtain the ultraviolet B emission.
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