Advanced Optical Information Encryption Enabled by Polychromatic and Stimuli‐Responsive Luminescence of Sb‐Doped Double Perovskites

Advanced Science, Journal Year: 2024, Volume and Issue: 11(24)

Published: April 16, 2024

Abstract The smart materials with multi‐color and stimuli‐responsive luminescence are very promising for next generation of optical information encryption anti‐counterfeiting, but these still scarce. Herein, a multi‐level strategy is developed based on the polychromatic emission Sb‐doped double perovskite powders (SDPPs). Cs 2 NaInCl 6 :Sb, KInCl AgInCl :Sb synthesized through coprecipitation methods exhibit broadband emissions bright blue, cyan, orange colors, respectively. transmitted by specific SDPP encrypted when different SDPPs mixed. confidential can be decrypted selecting corresponding narrowband filter. Then, an quick response (QR) code improved security demonstrated this multi‐channel selection strategy. Moreover, three types water‐triggered switching behaviors. represented erased/recovered simple water spray/drying. Whereas, collected from green channel permanently erased moisture, which fundamentally avoids leakage. Therefore, schemes designed to meet variety requirements. multicolor greatly enrich flexibility encryption, leaps level confidentiality.

Language: Английский

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Sb³⁺-Doped Indium-Based Metal Halide (Gua)₃InCl₆ with Efficient Yellow Emission

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(3), P. 3841 - 3852

Published: Jan. 11, 2024

In recent years, low-dimensional organic–inorganic hybrid metal halides (OIHMHs) have shown excellent photophysical properties due to their quantum structure, adjustable energy levels, and transfer between inorganic organic components, which attracted extensive attention from researchers. Herein, we synthesize a zero-dimensional (0D) OIHMH, Sb3+:(Gua)3InCl6, by introducing Sb3+ into (Gua)3InCl6, undergoes significant enhancement of the emission peak at 580 nm with photoluminescence yield (PLQY) boosted 17.86 95.72% when excited 340 nm. This boost in doped sample was studied combining ultrafast femtosecond transient absorption, temperature-dependent (PL) spectra, density functional theory (DFT) calculation, revealing process self-trapped exciton (STE) recombination emit light both Sb sites this 0D structure simultaneously. material lowest dark STE level site for undoped can amazingly very strong sample, has never been observed before. Finally, tested its application photoelectric device. work not only helps gain deeper understanding formation STEs In-based but also plays certain guiding role design new luminescent materials.

Language: Английский

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Efficient Yellow Self-Trapped Exciton Emission in Sb³⁺-Doped RbCdCl₃ Metal Halides

Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 61(18), P. 7143 - 7152

Published: April 29, 2022

Metal halide perovskites have flexible crystal and electronic structures adjustable emission characteristics, which very broad applications in the optoelectronic field. Among them, all-inorganic attracted more attention than others recent years because of their characteristics large diffusion length, high luminescence efficiency, good stability. In this work, Sb3+-doped RbCdCl3 crystalline powder was synthesized by a simple hydrothermal method, its properties were studied, showed band with Stokes shift efficient yellow light at about 596 nm room temperature photoluminescence quantum yield 91.7%. The came from transition self-trapped exciton 1 (STE1) out 3Pn (n = 0, 1, 2) to S0 due strong electron-phonon coupling, scaled increasing temperature. Moreover, color became white low temperatures occurrence other 0 (STE0) state 1S states Sb ions lattice. These changes may be used for sensing, material expands knowledge luminescent inorganic family further perovskites.

Language: Английский

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Tunable Efficient White Emission in Holmium Doped Double Perovskites Cs₂KInCl₆ via Antimony Sensitization

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 11(10)

Published: March 12, 2023

Abstract Recently, ns 2 metal ions (such as Bi 3+ and Sb ) doped double perovskites have captured intense attention for their efficient emission, however, achieving tunable white light emission is always an enormous challenge. Herein, /Ho co‐doped Cs KInCl 6 are proposed, the photoluminescence results show that there two bands, one broad cyan band stems from self‐trapped exciton (STE) in [SbCl ] 3‐ octahedron, while another red derives f‐f transitions of Ho . The processes can act sensitizer to activate which due energy transfer channel STE As concentration increases, luminous color be modulated orange under 315 nm irradiation, even obtained with a quantum yield 90 ± 2% when energy‐transfer efficiency 50%. Finally, single compound white‐light emitting diodes fluorescent anti‐counterfeiting labels based on 0.5%Sb /60%Ho fabricated. This work provides effective strategy achieve lead‐free through lanthanide ion co‐doping.

Language: Английский

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Realizing Color‐Tunable and Time‐Dependent Ultralong Afterglow Emission in Antimony‐Doped CsCdCl₃ Metal Halide for Advanced Anti‐Counterfeiting and Information Encryption

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 11(14)

Published: April 23, 2023

Abstract Long afterglow luminescent materials have captured intense attention for their unique applications in biological imaging, photodynamic therapy, and optical anti‐counterfeiting. However, achieving highly efficient tunable ultralong emission all‐inorganic metal halides is an open challenge. Herein, Sb 3+ ‐doped hexagonal CsCdCl 3 halide reported via hydrothermal reaction. Upon photoabsorption, the as‐synthesized compounds exhibit dual‐emission bands with a photoluminescence quantum yield (PLQY) of 59.6%, which can be attributed to self‐trapped exciton out strong electron‐phonon coupling. After ceasing excitation 365 nm, bright longest duration lasting up 5000 s witnessed . More importantly, color‐tunable time‐dependent realized regulating doping concentration , should due trap electrons increase gradually under high concentration. Given this unusual characteristics, anti‐counterfeiting information encryption are constructed based on compounds. These findings not only help further understand mechanism halides, but also provide new strategy designing novel materials.

Language: Английский

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Excitation-Wavelength-Dependent Emission Behavior in (NH₄)₂SnCl₆ via Sb³⁺ Dopant

The Journal of Physical Chemistry Letters, Journal Year: 2023, Volume and Issue: 14(6), P. 1460 - 1469

Published: Feb. 6, 2023

With high photoluminescence efficiency and a simple solution synthesis method, lead halide perovskites are expected to be promising material for display illumination. However, the toxicity environmental sensitivity of hinder its potential applications. Here, we introduced Sb

Language: Английский

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Effective Energy Transfer Boosts Emission of Rare-Earth Double Perovskites: The Bridge Role of Sb(III) Doping

The Journal of Physical Chemistry Letters, Journal Year: 2023, Volume and Issue: 14(31), P. 7108 - 7117

Published: Aug. 2, 2023

Halide perovskites have attracted considerable interest due to their excellent photoelectric properties. In this study, we synthesized Sb3+-doped Cs2NaTbCl6 using a solvothermal method investigate its tunable properties and low toxicity. Upon Sb3+ ion doping, the photoluminescence yield (PLQY) of significantly increased from ∼1.7 ∼47%. The introduced ions with ns2 electronic configuration expanded rare-earth element's absorption cross section, broke intrinsic forbidden transitions, suppressed nonradiative recombination. Additionally, codoping Mn2+ facilitated efficient energy transfer, resulting in highly photoluminescence. PLQY 1%Sb3+,3%Mn2+:Cs2NaTbCl6 reached remarkable 85.8%, marking highest reported value for double visible light region. This study highlights vital role Sb(III) doping as bridging agent enhance emission perovskites.

Language: Английский

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Surface Optics and Color Effects of Liquid Metal Materials

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(26)

Published: Jan. 29, 2023

Abstract Liquid metals (LMs) are emerging as new functional materials with rather unique physical or chemical behaviors. They generally safe and nontoxic, have high boiling points, reflectivities, good thermal electrical conductivities, flexibility, fluidity, self‐healing capability remain in liquid state at room temperature. However, the further applications of LMs limited by their single‐color appearance, such working situations imposed stringent requirements for color aesthetics. Recently, fluorescence functionalization overcome many conventional technical bottlenecks opened significant potential numerous fields owing to rich colors structure. In this review, recent developments optical properties, effects comprehensively investigated. The synthesis, structures, chromogenic mechanisms, photoelectric colorful systematically analyzed compared. effectiveness characteristics induced coating, mixing, compounding, surface modification, external stimuli provided, aiming establish a system synthesis practices LMs. Finally, challenges prospects field also been identified explained preferably guide scientific research coming time.

Language: Английский

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Achieving Multicolor Emitting of Antimony-Doped Indium-Based Halide Perovskite via Monovalent Metal Induced Phase Engineering

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(51), P. 59610 - 59617

Published: Dec. 15, 2023

Lead-free metal halide perovskites have attracted attention because of their excellent optical properties and nontoxicity. Here, we report the synthesis Sb3+-doped indium perovskite Cs2InCl5·H2O:Sb3+ by an improved solution coprecipitation method. The treatment with selected monovalent cation halides led to Cs2MInCl6 (Ag+, K+, Na+) in different crystal structures or phases. Sb3+ has isolated ns2 electron, acts as luminescence center exhibits bright broadband emission that originated from self-trapped excitons. Under UV light excitation, these phosphors emitted multicolored ranging blue, green, yellow, red depending on whether not which ion was used. phosphor samples were used print high-resolution 2D color barcodes for security anticounterfeiting applications. study presented here provides a new approach design lead-free unique properties.

Language: Английский

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White Light Emission from Single-Component Cs₇Cd₃Br₁₃:Pb²⁺,Mn²⁺ Crystals with High Quantum Efficiency and Enhanced Thermodynamic Stability

Chemistry of Materials, Journal Year: 2023, Volume and Issue: 35(2), P. 773 - 782

Published: Jan. 11, 2023

Single-component white light emitters are particularly attractive for fabricating economical solid-state devices display and lighting. Herein, an efficient with photoluminescence quantum yields approaching 98% has been obtained in Mn2+ Pb2+ co-doped Cs7Cd3Br13 crystals. The quantified bonding nonbonding characters calculated by the crystal orbital Hamilton population analysis demonstrate that occupy preferentially [CdBr4]2– tetrahedrons rather than [CdBr6]4– octahedrons Cs7Cd3Br13. According to PL spectral characteristic theoretical results, broadband emission from Cs7Cd3Br13:Pb2+,Mn2+ crystals is ascribed multiple origins, i.e., first self-trapped exciton (STE1) intrinsic trapping states of host lattice Cs7Cd3Br13, d–d transition Mn2+, second (STE2) induced introduction Pb2+, respectively. results density functional theory reveal incorporation significantly improved thermodynamic stability structure lower defect formation energies, which verified experimental observation temperature-dependent spectra emitting findings here provide a new perspective single-component via creating centers single matrix as well help elucidation preferential site occupancy mechanism dopants different symmetrical units.

Language: Английский

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