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• W4313201574 abstract "Developing an efficient broadband yellow phosphor with more red-light components and small thermal quenching is of great significance for solid-state lighting. In this study, a broadband yellow-emitting nitridoalumosilicate Ca4SiAl3N7:Ce3+ phosphor was successfully synthesized by a solid-phase method at comparatively low temperature (1350 °C) and normal pressure. The crystal structure and electronic structure of Ca4SiAl3N7 were studied using Rietveld refinement and density functional theory. The photoluminescence properties of the Ca4SiAl3N7:Ce3+ phosphor were studied, including excitation and emission spectra, time-resolved photoluminescence spectra and temperature-dependent emission spectra. The results show that the Ca4SiAl3N7:Ce3+ phosphor can be effectively excited by the blue chip and emit a strong broadband yellow light with maximum at 568 nm and the half width of 142 nm. Moreover, the Ca4SiAl3N7:Ce3+ phosphor exhibits good thermal stability, which can still maintain 75% and 68% of the strength at room temperature when at 150 °C and 200 °C, respectively, and without spectral shift. A warm WLED can be realized by combining Ca4SiAl3N7:Ce3+ yellow phosphor and blue LED chip. This study provides insights into developing novel broadband yellow nitridoalumosilicate phosphor with more red-light components, small thermal quenching and simple synthesis conditions." @default.
• W4313201574 created "2023-01-06" @default.
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• W4313201574 date "2023-04-01" @default.
• W4313201574 modified "2023-09-26" @default.
• W4313201574 title "A broadband yellow-emitting nitridoalumosilicate Ca4SiAl3N7:Ce3+ phosphor for solid-state lighting" @default.
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• W4313201574 doi "https://doi.org/10.1016/j.ceramint.2022.12.109" @default.
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