Anti-counterfeiting label material with double-mode light emitting function, preparation method and application thereof

An anti-counterfeit label and dual-mode technology, applied in the field of phosphorescent materials, achieves the effects of good repeatability, large adjustment range, and large range of luminescent colors
CN110358529AInactive Publication Date: 2019-10-22JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JILIN UNIV
Publication Date
2019-10-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of inorganic light emitting materials, and discloses an anti-counterfeiting label material with a double-mode light emitting function, a preparation methodand application thereof. The chemical formula of the anti-counterfeiting label material with the double-mode light emitting function is NaGdF4:0.50Yb / 0.20Eu@NaGdF4:0.15Ce@NaGdF4:0.50Yb / 0.20Tb@NaYF4;a plurality of layers of core-shell structures of the anti-counterfeiting label material with the double-mode light emitting function are synthesized in a mode of coating layer by layer; the thicknessof the shell layer is regulated and controlled by regulating and controlling the feeding molar ratio of each layer. The anti-counterfeiting label material disclosed by the invention has the double-mode light emitting function; moreover, the double-mode light-emitting colour has a large regulating range; the anti-counterfeiting label material with the double-mode light emitting function is high instability and high in repeatability, and has good practical and industrial prospects.
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Description

technical field

[0001] The invention belongs to the technical field of inorganic luminescent materials, and in particular relates to an anti-counterfeiting label material with dual-mode luminescence, a preparation method and application thereof. Background technique

[0002] Currently, the closest prior art:

[0003] Optical anti-counterfeiting label is an anti-counterfeiting technology that designs anti-counterfeiting label materials into specific characters or patterns, which can be directly recognized by naked eyes under the illumination of external light sources. Due to the advantages of high stability, good repeatability and adjustable luminous color, rare earth luminescent materials, especially up-conversion rare earth luminescent materials, are widely used in the field of anti-counterfeiting label materials. The optical specificity of rare earth luminescent materials largely determines the difficulty of deciphering anti-counterfeiting labels. Since the up-conversion...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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