Abstract
Ultraviolet-C light has significant application prospects in the fields of disinfection, air purification, etc. Herein, an effective UVC upconversion phosphor Y2SiO5:Pr3+ was successfully prepared, as evidenced by the XRD results. The diffuse reflection spectra of Y2SiO5: Pr3+ phosphors presented two distinct absorption bands corresponding to the electron transitions of 3H4 → 3P2 and 3H4 → 1D2, and the Eg was determined to be 4.22 eV for the Y2SiO5 host, which is very close to the Eg (4.172 eV) calculated by DFT. Under the excitation of 460 nm laser, two emission peaks centered at ~247 nm and ~ 258 nm were found in the range of 230-280 nm, which are attributed to the transitions of 4f5d → 3H4 and 4f5d → 3H5 of Pr3+ ions. With the help of temperature-dependent emission spectra, the phosphor demonstrated impressive thermal stability up to 150 °C. These findings indicate that the Y2SiO5: Pr3+ phosphor has the potential application in disinfection.
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Acknowledgments
This work has been supported by the Science and Technology Program of Ganzhou city, Jiangxi Province ([2020]60), the Scientific Research Foundation for Universities from the Education Bureau of Jiangxi Province (GJJ210844, GJJ190453), the Jiangxi Provincial Training Program of Innovation and Entrepreneurship for Undergraduates (No. S202210407004), and the Jiangxi Provincial Natural Science Foundation of China (No. 20212BAB204023).
Funding
This work has been supported by the Science and Technology Program of Ganzhou city, Jiangxi Province ([2020]60), the Scientific Research Foundation for Universities from the Education Bureau of Jiangxi Province (GJJ210844, GJJ190453), the Jiangxi Provincial Training Program of Innovation and Entrepreneurship for Undergraduates (No. S202210407004), and the Jiangxi Provincial Natural Science Foundation of China (No. 20212BAB204023).
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Fengqin Lai: Conceptualization, Methodology, Investigation, Writing–Original Draft. Xinning Xu: Conceptualization, Investigation, Writing–Original Draft. Junwei Shen: Investigation, Resources, Data Curation. Yuhang Wang: Validation, Investigation, Resources. Yinuo Yan: Conceptualization, Investigation, Resources. Yawen Nie: Resources, Data Curation. Weixiong You: Investigation. Di Wu: Investigation, Writing–review & editing, Project administration. Lei Han: Writing–review & editing, Project administration, Funding acquisition. Zongliang Xiao: Investigation, Resources, Data Curation, Funding acquisition.
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Lai, F., Xu, X., Shen, J. et al. Structure and Upconversion Luminescence Properties of Pr3+-Doped Y2SiO5 Phosphor. Silicon 15, 1913–1923 (2023). https://doi.org/10.1007/s12633-022-02148-x
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DOI: https://doi.org/10.1007/s12633-022-02148-x