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Hu, Wenting; Li, Ting; Liu, Xue; Dastan, Davoud; Ji, Kaiwen; Zhao, Puju
Journal of alloys and compounds, 03/2020, Letnik: 818Journal Article
1550 nm near-infrared (NIR) light excited lanthanide ion (Ln3+) doped up-conversion (UC) materials with tunable emission color have great application potential in optical anti-counterfeiting and it is essential to explore new stable phosphors and expand the emission color gamut for multicolor security printing. Herein, a new type of double perovskite tungstate UC phosphors LiYMgWO6: Er3+ with green and red double color emissions under 1550 nm excitation were synthesized by high temperature solid-state method. The emission color output of LiYMgWO6: Er3+ was adjusted from yellow-green to red by introducing Ho3+ ion to enhance the red emission and suppress the green emission. Fluorescent lifetime measurements were carried out to illustrate the color modulation mechanism. As a proof of concept, the fluorescent printing inks based on as-prepared phosphors were synthesized and fluorescent labels with special patterns were designed to demonstrate the anti-counterfeiting application. Display omitted •1550 nm pumped upconversion emission color of LiYMgWO6: Er3+ was modulated by Ho3+ doping.•The Chromaticity Modulation mechanism was investigated.•Anti-counterfeiting application based on the as-prepared phosphors was displayed. .
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Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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