Bright Circularly Polarized Mechanoluminescence from 0D Hybrid Manganese Halides

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(15)

Published: Jan. 17, 2024

Hybrid metal halides (HMHs) with efficient circularly polarized luminescence (CPL) have application prospects in many fields, due to their abundant host-guest structures and high photoluminescence quantum yield (PLQY). However, CPLs HMHs are predominantly excited by light or electricity, limiting use multivariate environments. It is necessary explore a novel excitation method extend the of chiral as smart stimuli-responsive optical materials. In this work, an enantiomeric pair 0D hybrid manganese bromides, [H

Language: Английский

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Electrical stimulation for brighter persistent luminescence

Light Science & Applications, Journal Year: 2024, Volume and Issue: 13(1)

Published: July 15, 2024

Abstract An immature understanding of the mechanisms persistent luminescence (PersL) has hindered development new luminescent materials (PersLMs) with increased brightness. In this regard, in-situ direct current (DC) electric field measurements were conducted on a layered structure composed SrAl 2 O 4 :Eu 2+ ,Dy 3+ phosphor, and an electrode. study, photoluminescence (PL) afterglow properties investigated respect to voltage by analyzing signal thermoluminescence (TL) spectroscopy. The intensity PersL due novel phenomenon known as “external stimulated enhancement initial brightness afterglow”. This dynamic process was illustrated via use rate equation approach, where electrons trapped ultra-shallow trap at 0.022 eV could be transferred through conduction band during long afterglow. reach 0.538 cd m −2 6 V voltage. design stimulation technique enables PersLMs provides perspective for exploring fundamental mechanics certain established PersLMs.

Language: Английский

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Enabling Multimodal Luminescence in a Single Nanoparticle for X-ray Imaging Encryption and Anticounterfeiting

Nano Letters, Journal Year: 2024, Volume and Issue: 24(31), P. 9691 - 9699

Published: July 25, 2024

Multimodal luminescent materials hold great promise in a diversity of frontier applications. However, achieving the multimodal responsive luminescence at single nanoparticle level, especially besides light stimuli, has remained challenge. Here, we report conceptual model to realize by constructing both mechanoluminescence and photoluminescence nanoparticle. We show that lanthanide-doped fluoride nanoparticles are able produce excellent through X-ray irradiation, color-tunable becomes available selecting suitable lanthanide emitters core–shell–shell structure. Furthermore, design multilayer core–shell nanostructure enables emissions including radioluminescence, persistent luminescence, mechanoluminescence, upconversion, downshifting, thermal-stimulated simultaneously under multichannel excitation stimuli. These results provide new insights into mechanism induced nanocrystals contribute development smart toward imaging encryption, stress sensing, anticounterfeiting.

Language: Английский

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Near‐Infrared Mechanoluminescence from Cr³⁺‐Doped Spinel Nanoparticles for Potential Oral Diseases Detection

Small, Journal Year: 2024, Volume and Issue: 20(45)

Published: Aug. 10, 2024

Mechanoluminescence (ML) phosphors have found various promising utilizations such as in non-destructive stress sensing, anti-counterfeiting, and bio imaging. However, the reported NIR MLs predominantly been limited to bulky particle size weak ML intensity, hindering further practical applications. For this regard, a nano-sized ZnGa

Language: Английский

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Liquid nitrogen temperature to 700 K Bi3+ thermoluminescence: Toward wide-temperature-range light dosimeters for versatile anti-counterfeiting, information storage, and x-ray imaging

Applied Physics Reviews, Journal Year: 2024, Volume and Issue: 11(4)

Published: Oct. 31, 2024

Discovering light dosimeters that can function effectively from liquid nitrogen temperature to 700 K presents significant challenges. Such facilitate a range of cutting-edge applications, including anti-counterfeiting measures at low for cryo-preservation. To such discovery, stacked vacuum referred binding energy diagrams the LiYGeO4 cluster crystals have been first constructed. They offer robust method controlling both electron and hole trapping depth in crystals. Wide shifting Bi2+ Eu2+ thermoluminescence (TL) glow bands emerges 200 500 LiYxLu1-xGeO4:0.01Bi3+ LiYxLu1-xGeO4:0.01Bi3+, 0.001Eu3+, by changing x, facilitating conduction band tailoring. Bi4+ TL 300 LiYGezSi1-zO4:0.01Bi3+, tuning z, valence peaks near 135, 185, 232, 311 emerge LiyNa1-yYGeO4: 0.001Bi3+. Particularly, discovered Bi3+ or/and lanthanide modified exhibit superior charge carrier storage capacity minimal fading properties. For instance, ratio intensity optimized LiYGe0.75Si0.25O4:0.001Bi3+ industrial BaFBr(I):Eu2+ is as high ∼4. Interestingly, imaging intense optically driven ultraviolet-A (UVA) luminescence has validated 254 nm energized LiY0.25Lu0.75GeO4:0.01Bi3+ with 100 lux white LED illumination. Together ZnS:Mn2+, LiTaO3:Bi3+, Sm3+, Cs2ZrCl6:Sb3+ perovskites, realization wide offers promising use versatile anti-counterfeiting, information storage, delayed x-ray purposes.

Language: Английский

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Enhanced Storage Capacity via Anion Substitution for Advanced Delayed X-ray Detection

Nano Letters, Journal Year: 2024, Volume and Issue: 24(10), P. 3282 - 3289

Published: Feb. 29, 2024

X-ray radiation information storage, characterized by its ability to detect with delayed readings, shows great promise in enabling reliable and readily accessible imaging dosimetry situations where conventional detectors may not be feasible. However, the lack of specific strategies enhance memory capability dramatically hampers further development. Here, we present an effective anion substitution strategy storage NaLuF4:Tb3+ nanocrystals attributed increased concentration trapping centers under irradiation. The stored can read out as optical brightness via thermal, 980 nm laser, or mechanical stimulation, avoiding real-time measurement ionizing radiation. Moreover, maintained for more than 13 days, resolution reaches 14.3 lp mm–1. These results demonstrate that methods effectively achieve high broaden application scope storage.

Language: Английский

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Multi-Mode Luminescence in Smart Near-Infrared Cr³⁺/Pr³⁺ Codoped SrGa₁₂O₁₉ Phosphors Induced by Three Distinct Excitation Mechanisms

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(26), P. 33855 - 33864

Published: June 20, 2024

Near-infrared (NIR) phosphors have emerged as novel luminescent materials across various fields due to their unique advantages of high penetration and invisibility. However, there is currently a lack intelligent NIR that can achieve multimode stimuli responsive for sensing applications. In this study, we employed high-temperature solid-phase reaction incorporate Pr3+ into Cr3+-doped gallate magnetite SrGa12O19 phosphor, yielding phosphor. Also, the inherent cation vacancies defects in matrix, material not only exhibits brighter photoluminescence but also distinct mechanoluminescence at lower load. Notably, Pr3+-doped SrGa12O19:Cr3+ demonstrates extended persistent luminescence thermoluminescence effects. Finally, combined phosphor with blue LED chip develop new multifunctional pc-LED. Leveraging NIR's penetrating ability, it persist biological tissues prolonged periods, enabling optical inspection offering approach password protection anticounterfeiting measures. This solution significantly expands application potential light food quality assessment analysis.

Language: Английский

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Recent advances in multimodal mechanoluminescent sensors enabled by nanostructure design

Nanoscale, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Multifunctional coupling and signal decoupling achieved through nanostructure supramolecule design, enable multimodal mechanoluminescent materials to play an increasingly important role in interdisciplinary applications cutting-edge fields.

Language: Английский

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Daylight-Activated Recoverable Mechano-luminescence Material SrGa12O₁₉: Tb3+ for Enhanced Speed Detection Applications

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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Defect Engineering for Enhanced Charge Carrier Storage in Zirconium Stannum Halide Perovskites: Advancements in Low‐Temperature Data Storage and X‐Ray Imaging

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Optimizing charge carrier storage in trap‐controlled halide perovskites poses a significant challenge, particularly due to the varying electronic properties and trap dynamics across temperature range from ≈100 400 K. This dependence affects both efficiency of generation their retention. In this study, substantial advancements performance zirconium stannum are reported through targeted defect engineering. By modulating composition Cs 2 Sn 1‐x Zr x Cl 6 incorporating dopants Cr 3+ , Ga Bi Te 4+ remarkable enhancements X‐ray triggered capacity realized. Notably, ZrCl doped with or exhibits three fold increase 100 300 K, significantly outperforming state‐of‐the‐art BaFBr(I):Eu 2+ red afterglow Y O S:Eu phosphor. The :yTe demonstrates over 40 times greater wide K achieves low detection limit 99.16 nGy for dosimetry applications. Furthermore, :0.03Te exceptional persistent luminescence lasting 14 h at 180 295 research underscores high‐performance capabilities engineered perovskites, paving way application advanced technologies temperatures.

Language: Английский

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