期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 105, 期 7, 页码 4731-4743出版社
WILEY
DOI: 10.1111/jace.18407
关键词
anti-counterfeiting; temperature sensing; upconversion luminescence
资金
- National Natural Science Foundation of China [11864015]
- Natural Science Foundation of Jiangxi Province of China [20202BAB204009]
- Scientific Research Foundation for Universities from the Education Bureau of Jiangxi Province [GJJ170490, GJJ190453]
Doping transition metal ions in the up-conversion (UC) luminescent material can enhance the luminescence intensities and alter the colors. La2MgTiO6:Yb3+/Mn4+/Ln(3+) phosphors prepared in this study showed excellent luminescence properties and have potential applications in temperature sensing and anti-counterfeiting.
The doping of transition metal ions in the up-conversion (UC) luminescent material doped with Yb3+/Ln(3+) is a facile way to increase their UC luminescence intensities and alter their colors. In this study, La2MgTiO6:Yb3+/Mn4+/Ln(3+) (Ln(3+ )= Er3+, Ho3+, and Tm3+) phosphors showing excellent luminescence properties were prepared by a solid-state method. The sensitivity of the La2MgTiO6:Yb3+/Ln(3+)/Mn4+ phosphor was double that without Mn4+, because Mn4+ affects the UC emissions of Ln(3+) via energy transfer between these ions. Moreover, Mn4+ also acts as a down-conversion activator, which can combine with UC ions to achieve multi-mode luminescence at different wavelengths. Under 980 nm excitation, these samples emit green light (from Er3+ and Ho3+) and blue light (from Tm3+). In contrast, under 365 nm excitation, they emit red light (from Mn4+). Further testing revealed that the La2MgTiO6:Yb3+/Mn4+/Ln(3+) phosphors have potential applications in temperature sensing and anti-counterfeiting.
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