Engineering tri-channel orthogonal luminescence in a single nanoparticle for Information Encryption

Inorganic Chemistry Frontiers, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Tri-channel orthogonal luminescence under different excitation wavelengths is achieved in a single nanoparticle for information encryption.

Language: Английский

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Visible and Infrared Up-conversion Emission in Er3+-Doped Fluorochlorozirconate Glasses under 1550 nm and 980 nm Excitations

Journal of Luminescence, Journal Year: 2025, Volume and Issue: unknown, P. 121219 - 121219

Published: April 1, 2025

Language: Английский

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High-Yb³⁺-Doped NaYbF₄:10% Er@NaYF₄ Alloyed Nanoparticles for Brightening Upconversion and Multi-Colorizing Information Encryption

ACS Applied Optical Materials, Journal Year: 2024, Volume and Issue: 2(4), P. 595 - 603

Published: March 25, 2024

Alloyed upconversion nanoparticles (aUCNPs, NaYbF4:10% Er@NaYF4) with high Yb3+ doping were designed to brighten luminescence, exploring multicolor patterns of information encryption. The luminescence intensity aUCNPs was 2.3 times higher than that common doped UCNPs reported (dUCNPs, NaYF4:20% Yb, 2% Er@NaYF4). Furthermore, because the (90%), both green and red emissions enhanced, ∼4.2 ∼17.2 stronger 10% Er@NaYF4, respectively. reasons for having a brightened explored by synthesizing four different structures comparing their luminescence. These are attributed unique features: (1) larger absorption cross section accumulating energy, (2) more efficient energy transfer between Er3+, (3) inert shell inhibiting surface quenching. Eventually, three colors including yellow, orange, obtained combining neutral (NR) taking advantage inner filter effect (IFE), thus successfully applied in encryption patterns.

Language: Английский

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Dynamic modulation of multicolor upconversion luminescence of Er3+ via excitation pulse width

The Journal of Chemical Physics, Journal Year: 2024, Volume and Issue: 160(20)

Published: May 28, 2024

Lanthanide-doped upconversion (UC) luminescent materials display multicolor emissions, making them ideal for a variety of applications, such as multi-channel biological imaging, fluorescence encryption, anti-counterfeiting, and 3D display. Manipulating the UC emissions with fixed composition is crucial their applications. Herein, we propose facile strategy to achieve pulse-width-dependent in NaYF4:Yb/Er/Tm nanocrystals. Upon excitation 980 nm continuous-wave laser diode, Er3+ ions NaYF4:20%Yb,15%Er,1%Tm nanocrystals exhibited red-to-green (R/G) ratio 11.3. Nevertheless, by employing pulse widths from 0.1 10 ms, R/G can be easily adjusted 0.9 11.3, resulting continuous remarkable color transformation green, yellow, orange, red. By virtue dynamic luminescence variation these nanocrystals, demonstrated potential applications areas anti-counterfeiting information encryption. These findings provide deep insights into excited-state dynamics energy transfer upon excitation, which may pave way designing toward versatile

Language: Английский

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Manipulating energy migration in nanoparticles toward tunable photochromic upconversion

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Dec. 30, 2024

Smart control of energy interactions plays a key role in manipulating upconversion dynamics and tuning emission colors for lanthanide-doped materials. However, quantifying the flux particular migration representative sensitizer-activator coupled system has remained challenge. Here we report conceptual model to examine single nanoparticle by designing an interfacial transfer mediated nanostructure. We show that indeed occurs simultaneously with competition between them can be quantified proposing characteristic ratio parameter. Moreover, this is also able realize color-switchable photochromic temporal up-transition processes. These findings offer deep insight into understanding provide versatile approach nanostructures tunable colors, showing great promise applications logic operation information security.

Language: Английский

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Exploring luminescence quenching on lanthanide-doped nanoparticles through changing the spatial distribution of sensitizer and activator

Nano Research, Journal Year: 2023, Volume and Issue: 17(5), P. 4517 - 4524

Published: Dec. 15, 2023

Language: Английский

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以三价钬离子为桥联剂的上转换纳米粒子能量传递 新策略

Science China Materials, Journal Year: 2023, Volume and Issue: 66(9), P. 3696 - 3705

Published: July 25, 2023

Language: Английский

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Upconversion Nano‐Composites for Orthogonal Trichromatic Luminescence Aiming at High Color Purity Volume Display

Advanced Materials Technologies, Journal Year: 2024, Volume and Issue: 9(9)

Published: March 3, 2024

Abstract Orthogonal three‐color luminescence materials designed based on lanthanide doping multi‐component nano‐systems have exhibited great potential in volume display technology. Previous studies devoted to integrate the different color emitters within a single core‐shell nanoparticle, which suffers complexity synthesis and difficulty repeatability. In this work, an alternative is proposed. Three kinds of upconversion nanocrystals (UCNCs) with relatively simple configurations are prepared separately. Each kind takes charge emit specific upon one particular excitation (i.e., 808, 980, 1540 nm pumps). Luminescent property mixture containing these investigated. Excitation wavelength driven orthogonal found mixture. With combination excitation, emission can be modulated, covering gamut its aera 110% sRGB, superior previous reports. addition, quantized strategy evaluate orthogonality also proposed, will useful for further investigation development remote‐type controlled luminescent materials. Finally, demonstration colored 3D application conducted presented work.

Language: Английский

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Tm³⁺ mediated multicolor luminescence of NaYbF₄:Er,Tm@NaYF₄ for advanced anti-counterfeiting

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(22), P. 9380 - 9386

Published: Jan. 1, 2024

NaYbF 4 :Er,Tm@NaYF UCNPs combine the advantages of Tm 3+ mediated multicolor luminescence and excitation power dependent color change, showing great application potential in advanced anti-counterfeiting paintings.

Language: Английский

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Strategy to Achieve a Pure Red/Green/Blue-Emitting Upconversion Luminescence for Full-Color Displays

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(29), P. 38221 - 38230

Published: July 15, 2024

Multicolor tunable upconversion nanoparticles (UCNPs) have garnered attention owing to their diverse applications such as displays, imaging, and security. Typically, achieving multicolor emission from UCNPs requires complicated core/multishell nanostructures comprising a core with at least five shells. Here, we propose strategy achieve bright orthogonal red (R), green (G), blue (B) (UC) luminescence without synthesizing core/quintuple-shell or core/sextuple-shell nanostructures. For RGB triprimary color UC luminescence, bicolor-emitting core/shell-structured are synthesized blended. Orthogonal RB, RG, GB achieved through photon blocking. The combination of two exhibits pure full-color tunability via manipulation excitation laser conditions. Furthermore, present displays transparent UCNP–polymer composites utilizing three distinct near-infrared light wavelengths, implying that the proposed for attaining may facilitate advancements in development volumetric displays.

Language: Английский

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