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Multiple‐response anti‐counterfeiting realized in CaYAl 3 O 7 host with the dual coexistence of Eu 2+ /Eu 3 +
Author(s) -
Yang Xiuxia,
Zhao Lei,
Zeng Wei,
Liu Zhichao,
Fan Xiaotong,
Tian Shuyu,
Zhang Hao,
Xu Xuhui,
Qiu Jianbei,
Yu Xue
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16891
Subject(s) - ion , photoluminescence , spectral line , luminescence , fluorescence , dual (grammatical number) , matrix (chemical analysis) , host (biology) , work (physics) , materials science , analytical chemistry (journal) , chemistry , physics , optoelectronics , optics , art , ecology , literature , chromatography , astronomy , biology , thermodynamics , organic chemistry , composite material
Fluorescent anti‐counterfeiting technologies have become indispensable by virtue of their high concealment properties. In this work, the observation of the characteristic emission originated from Eu 2+ and Eu 3+ ions in CaYAl 3 O 7 realizes a dual‐mode anti‐counterfeiting strategy. The host matrix provides an environment, where blue and red emission could be manipulated with the introduction of Nd 3+ ions for the reduced occupation of Eu 3+ in the sites of Y 3+ ions. Moreover, the photoluminescence spectra of these samples exhibit time and temperature‐dependent dynamic changes thanks to the capture and release of carriers in the reconstructed traps induced by Nd 3+ ions. Herein, a multi‐stimuli responsive dynamic and static anti‐counterfeiting could be achieved in this work.