Abstract
In this study, a series of Ca9Sc(PO4)7: Sm3+ (CSP: Sm3+) orange-red phosphors were synthesized by the conventional solid-phase method, and their crystal structure, luminescent properties, decay lifetimes and thermal stability were investigated. The computational result shows that the CSP substrate has a wide band gap value (4.258 eV). At 403 nm excitation, the emission spectrum of CSP: Sm3+ phosphors has an intense orange red emission at 602 nm. The optimum concentration of Sm3+ ion doped phosphor is 0.12, and the phosphor has a high color purity (97%). Moreover, the prepared phosphors have excellent thermal stability, and the emission intensity can still reach 91.68% of that at room temperature at 423 K. The above results indicate that the prepared CSP: Sm3+ phosphors have excellent luminescent properties and have potential applications in solid-state lighting.
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All data, models, and code generated or used during the study appear in the submitted article.
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Acknowledgements
This work was supported by the Project for the Growth of Young Scientific and Technological Talents in General Higher Education Institutions in Guizhou Province (Qian jiao he KY zi [2022] No. 348), the National Natural Science Foundation of China (No. 52268001), the Guiyang Scientific and Technological Achievements Transformation Plan Project (No.[2022]5-8), the Natural science Research project of the Education Department of Guizhou Province (No.QJJ[2022]001), the Natural science Research project of the Education Department of Guizhou Province (No.QJJ[2023]022, No.QJJ[2023]077), the Science and Technology Support Plan Project of Guizhou Province (Grant [2020]4Y041).
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CW: Conceptualization, Writing-original draft, Data curation, Software. ZS: Formal analysis, Investigation, Visualization. JZ: Methodology, Investigation, Validation. JR: Funding acquisition, Supervision, Writing–review & editing, Validation, Project administration, Resources.
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Wei, C., Sun, Z., Ran, J. et al. Orange red Ca9Sc(PO4)7: Sm3+ phosphor with excellent thermal stability for solid state lighting. Appl. Phys. A 130, 135 (2024). https://doi.org/10.1007/s00339-023-07267-9
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DOI: https://doi.org/10.1007/s00339-023-07267-9