A dynamic three-path authenticating model for anti-counterfeiting in a single host of CaAl2Si2O8

Tian, Shuyu; Zhang, Hao; Yang, Xiuxia; Yang, Liuli; Min, Qiuhong; Ma, Hongqing; Yu, Xue; Qiu, Jianbei; Xu, Xuhui

doi:10.1016/j.cej.2021.128695

Cited by 37 publications

(14 citation statements)

References 33 publications

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“…Information security plays an increasingly important role in the context of big data and artificial intelligence. − Materials with multiple anticounterfeiting capabilities have received widespread attention, which work by changing the external stimulus, such as temperature, − pressure, , pH, , or excitation source, , to realize different signal outputs. Optical anticounterfeiting, including structural colors , and luminescence, , can be recognized by the naked eye and, thereby, has been widely used in our daily life.…”

Section: Introductionmentioning

confidence: 99%

Upconversion Nanoparticle-Integrated Bilayer Inverse Opal Photonic Crystal Film for the Triple Anticounterfeiting

Zhang

Ren

et al. 2022

ACS Appl. Mater. Interfaces

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Optical anticounterfeiting plays a vital role in information security because it can be recognized by the naked eye and is difficult to imitate. Herein, a hydrophilic modified upconversion nanoparticle (M-UCNP)-integrated bilayer inverse opal photonic crystal (IOPC) film was designed in which the luminescent M-UCNPs were deposited on the surface of the optimized bilayer structure with double photonic stop bands. The structure which can modulate light to produce structural colors can also enhance the upconversion luminescence (UCL) to improve the anticounterfeiting effect synergistically. On the one hand, the reflection colors from green to blue were observed in the specular angles on the front (540-layer) of the film. Meanwhile, the scattering colors under nonspecular angles from red to blue on the back (808-layer) appeared in the natural light. On the other hand, the bilayer structure in which the 808-layer functions as a “secondary excitation source” to improve the intensity of the excitation light on M-UCNPs and the 540-layer reflects the emission light of the M-UCNPs to enhance the UCL intensity endows the film with good night vision ability. Finally, the dual-mode structural colors and enhanced UCL of the patterned film work together to realize triple anticounterfeiting in banknotes.

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Section: Introductionmentioning

confidence: 99%

Upconversion Nanoparticle-Integrated Bilayer Inverse Opal Photonic Crystal Film for the Triple Anticounterfeiting

Zhang

Ren

et al. 2022

ACS Appl. Mater. Interfaces

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“…For example, Eu 2+/3+ -co-existing phos-phors are utilized in advanced anti-counterfeiting according to their excitation-wavelength/temperature-driven color evolution. 10,11 The different thermal quenching behaviors of Eu 2+ and Eu 3+ also qualify these phosphors for optical thermometry. [12][13][14][15][16][17][18] Novel application scenarios are expected as well.…”

Section: Introductionmentioning

confidence: 92%

Self-reduction-induced BaMgP₂O₇:Eu^2+/3+: a multi-stimuli-responsive phosphor for X-ray detection, anti-counterfeiting and optical thermometry

Qiu

et al. 2022

Dalton Trans.

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“…[2] Intense optically stimulated emission emerges in storage phosphors when the stored charge carriers are liberated by optical stimulation. [3] Because of these features, afterglow and storage phosphors have applications in computed radiography (CR), [4] battery-free light dosimeter, [5] anti-counterfeiting, [6] and bio-imaging. [1a] Although many compounds have been tried, the state-ofthe-art afterglow and storage phosphors are still SrAl 2 O 4 :Eu 2+ ,Dy 3+[3b,7] and BaFBr(I):Eu 2+ .…”

Section: Introductionmentioning

confidence: 99%

Vacuum‐Referred Binding Energies of Bismuth and Lanthanide Levels in LiTaO₃ Perovskite: Toward Designing Energy Storage Phosphor for Anti‐Counterfeiting, X‐Ray Imaging, and Mechanoluminescence

Lyu

Dorenbos

2022

Laser & Photonics Reviews

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Discovering UV-light or X-ray charged afterglow and storage phosphors with high charge carrier storage capacity remains challenging. Herein, a method is proposed by combining vacuum referred binding energy (VRBE) diagram construction and optimization of dopants' concentration and compound synthesis. The refined chemical shift model, optical spectroscopy, and thermoluminescence will be combined to construct the VRBE diagram of LiTaO 3 with the lanthanide and bismuth charge transition levels. Based on the constructed VRBE diagram of LiTaO 3 , Bi 3+ , and/or Ln 3+ (Ln = Tb or Pr) doped LiTaO 3 will be studied. By combining Bi 3+ with Tb 3+ , Pr 3+ , or Bi 3+ itself, Bi 3+ emerges to act as a ≈0.62 eV deep electron trap, while Tb 3+ , Pr 3+ , or Bi 3+ acts as about 1.5 eV deep hole capturing and recombination centres. The VRBE in the Bi 2+ 2 P 1/2 ground state will be derived by thermoluminescence study. Proof-of-concept X-ray imaging, compression force distribution monitoring, and color-tailoring for anti-counterfeiting will be demonstrated by using the developed Bi 3+ and/or Ln 3+ doped LiTaO 3 . This work promotes the understanding of trap level locations and on the trapping and release processes of charge carriers in Bi 3+ and/or lanthanides doped inorganic compounds for rational design of new afterglow and storage phosphors.

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A dynamic three-path authenticating model for anti-counterfeiting in a single host of CaAl2Si2O8

Cited by 37 publications

References 33 publications

Upconversion Nanoparticle-Integrated Bilayer Inverse Opal Photonic Crystal Film for the Triple Anticounterfeiting

Upconversion Nanoparticle-Integrated Bilayer Inverse Opal Photonic Crystal Film for the Triple Anticounterfeiting

Self-reduction-induced BaMgP₂O₇:Eu^2+/3+: a multi-stimuli-responsive phosphor for X-ray detection, anti-counterfeiting and optical thermometry

Vacuum‐Referred Binding Energies of Bismuth and Lanthanide Levels in LiTaO₃ Perovskite: Toward Designing Energy Storage Phosphor for Anti‐Counterfeiting, X‐Ray Imaging, and Mechanoluminescence

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A dynamic three-path authenticating model for anti-counterfeiting in a single host of CaAl2Si2O8

Cited by 37 publications

References 33 publications

Upconversion Nanoparticle-Integrated Bilayer Inverse Opal Photonic Crystal Film for the Triple Anticounterfeiting

Upconversion Nanoparticle-Integrated Bilayer Inverse Opal Photonic Crystal Film for the Triple Anticounterfeiting

Self-reduction-induced BaMgP2O7:Eu2+/3+: a multi-stimuli-responsive phosphor for X-ray detection, anti-counterfeiting and optical thermometry

Vacuum‐Referred Binding Energies of Bismuth and Lanthanide Levels in LiTaO3 Perovskite: Toward Designing Energy Storage Phosphor for Anti‐Counterfeiting, X‐Ray Imaging, and Mechanoluminescence

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Self-reduction-induced BaMgP₂O₇:Eu^2+/3+: a multi-stimuli-responsive phosphor for X-ray detection, anti-counterfeiting and optical thermometry

Vacuum‐Referred Binding Energies of Bismuth and Lanthanide Levels in LiTaO₃ Perovskite: Toward Designing Energy Storage Phosphor for Anti‐Counterfeiting, X‐Ray Imaging, and Mechanoluminescence