In:
Journal of the American Ceramic Society, Wiley, Vol. 103, No. 3 ( 2020-03), p. 2235-2243
Abstract:
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.
Type of Medium:
Online Resource
ISSN:
0002-7820
,
1551-2916
Language:
English
Publisher:
Wiley
Publication Date:
2020
detail.hit.zdb_id:
2008170-4
detail.hit.zdb_id:
219232-9
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