作者: Yufei Tang , Cong Wu , Yuan Song , Yuanlin Zheng , Kang Zhao
DOI: 10.1016/J.CERAMINT.2018.04.102
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摘要: Abstract The development of methods to obtain ceramic pigments with fluorescence characteristics or hyper-domain performance has attracted research interest. In this study, Er-doped and Er/Yb-codoped CoAl2O4 were synthesized by co-precipitation. influence Er doping, Er/Yb codoping, the doping contents on colour, composition, luminescence properties investigated. did not significantly affect phase composition colour pigment. upconversion effect was induced excitation a 950 nm laser. could enhance intensity At 1 mol.% content, all luminous intensities reached maximum values. downconversion observed after 350 nm blue, slight differences in different observed. Yb2O3 formed codoped at > 6 mol.% Yb thereby affecting red light (739 nm) strongest cases. colours decreased minimum value 9 mol.% content compared those other contents. 3 mol.% very low values (close 0), quenching Yb3+ achieved using exhibited under an infrared laser inhibited visible-light reflection UV This pigment can be developed further anti-counterfeit function.