Inorganic photochromic materials: Recent advances, mechanism, and emerging applications

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(2)

Published: April 21, 2024

Abstract Inorganic photochromic materials, as emerging photoresponsive have attracted unparalleled interest because of their potential applications in various photoactive devices such smart windows, optical memories, and decorations. Over the past decades, great research efforts been focused on further development high‐performance revealing underlying physical mechanism well exploring new advanced applications. However, significant challenges still exist achieving large contrast, realizing color‐tunable response, confirming detailed processes. In this review, latest progress inorganic materials is summarized from aspects advance photochromism, techniques for evaluating methods regulating behavior. The information storage, photocatalysis, anti‐counterfeiting, radiation dosimetry so are also discussed. perspectives terms practical presented. This review aims to provide fundamentals about mechanism, properties promote application devices.

Language: Английский

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Pushing Trap‐Controlled Persistent Luminescence Materials toward Multi‐Responsive Smart Platforms: Recent Advances, Mechanism, and Frontier Applications

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(37)

Published: July 14, 2024

Abstract Smart stimuli‐responsive persistent luminescence materials, combining the various advantages and frontier applications prospects, have gained booming progress in recent years. The trap‐controlled property energy storage capability to respond external multi‐stimulations through diverse pathways make them attractive emerging multi‐responsive smart platforms. This review aims at advances materials for advanced multi‐stimuli‐responsive design principles, mechanisms, representative stimulations, i.e., thermo‐, photo‐, mechano‐, X‐rays responsiveness, are comprehensively summarized. Various hybrid systems containing highlighted. Specifically, temperature dependent trapping de‐trapping performance is discussed, from extreme‐low ultra‐high conditions. Emerging future perspectives briefly presented. It hoped that this would provide new insights guidelines rational manipulation of

Language: Английский

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Unraveling chromism-induced marvels in energy storage systems

Progress in Materials Science, Journal Year: 2024, Volume and Issue: unknown, P. 101374 - 101374

Published: Sept. 1, 2024

Language: Английский

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Self-recoverable NIR mechanoluminescence from Cr3+ doped perovskite type aluminate

Advanced Powder Materials, Journal Year: 2023, Volume and Issue: 3(2), P. 100165 - 100165

Published: Nov. 8, 2023

Mechanoluminescent (ML) materials, which have the ability to convert mechanical energy optical energy, found huge promising applications such as in stress imaging and anti-counterfeiting. However, main reported ML phosphors are based on trap-related ones, thus hindering practical due requirement of complex light pre-irradiation process. Here, a self-recoverable near infrared (NIR) material LaAl1-xO3: xCr3+ (x = 0.2 %, 0.4 0.6 0.8 1.0 % 1.2 %) has been developed. Based preheating method corresponding performance analysis, influences residual carriers eliminated detailed dynamic luminescence process analysis is realized. Systematic experiments conducted reveal origin emissions, demonstrating that dictated more by non-centrosymmetric piezoelectric crystal characteristic. In general, this work provided significant references for exploring efficient NIR may provide potential anti-counterfeiting bio-stress sensing.

Language: Английский

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Boosting the photochromic property of KSr2Nb5O15-based ceramics through an indirect vacancy-regulation strategy

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 150080 - 150080

Published: Feb. 29, 2024

Language: Английский

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Nonstoichiometry-Induced Self-Activated Phosphors for Dynamic Anti-counterfeiting Applications

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(25), P. 32402 - 32410

Published: June 14, 2024

Optical signals with distinctive properties, such as contactless, fast response, and high identification, are harnessed to realize advanced anti-counterfeiting. However, the simultaneous attainment of multi-color, -temporal, -modal luminescence performance remains a compelling imperative pursuit. In our work, temperature/photon-responded dynamic self-activated originating from nonstoichiometric Zn2GeO4 is developed modulation intrinsic defects. The increased concentration oxygen vacancies (VO••) contributes an enhanced recombination ZnGe″–VO••, ultimately improving performance. Additionally, photoluminescence (PL) color representative Zn2.2GeO4 sample changes green blue–white ultraviolet (UV) irradiation time. Concurrently, emission undergoes variation blue ambient temperature raises 280 420 K. Remarkably, long persistent (LPL) photostimulated (PSL) behaviors observed. Herein, this study elucidates sophisticated anti-counterfeiting approach grounded in luminescent attributes Zn2GeO4, presenting promising frontier for evolution technologies.

Language: Английский

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Preparation and photoluminescence performances of orange-red emitting Sm3+-doped BaIn2(P2O7)2 phosphors for flexible display and anti-counterfeiting

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

Published: March 1, 2025

Language: Английский

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Heterovalent Doping in CsCdCl₃ Enabled Tunable Multimode Luminescence and Photochromism Toward Multilevel Anti‐Counterfeiting

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 12(11)

Published: Dec. 10, 2023

Abstract Integrating self‐trapped excitons (STEs), dopants, and defect levels in a single‐component metal halide perovskite will be of significance for tunable multimode luminescence photochromism. Here, platform utilizing interactions STEs, defects, alien dopants CsCdCl 3 by heterovalent doping strategy is demonstrated, which the photoluminescence quantum efficiency improved, more importantly, emissions can manipulated statically dynamically changing excitation wavelength/irradiation time. Meanwhile, presence carrier trapping de‐trapping processes leads to bright orange–near‐infrared persistent photochromic behaviors, quickly erased white light, enabling visual displays codable dark dual‐fields. Inspired these versatile optical characteristics doped luminescent halides, multilevel encryption anti‐counterfeiting with advantages nondestructive convenient authentication constructed.

Language: Английский

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Multimode Dynamic Photoluminescence of Bi³⁺-Activated ZnGa₂O₄ for Optical Information Encryption

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(24), P. 9671 - 9678

Published: June 3, 2023

Optical storage technology for information encryption is a popular means of safeguarding information. Herein, Bi3+-activated ZnGa2O4 multimode dynamic photoluminescence (PL) material developed. Upon being irradiated with an ultraviolet lamp at fixed excitation wavelength 254 nm, the ZnGa2O4: x% Bi3+ (x = 0.5-5.0) samples exhibit varying degrees PL emission due to distinct doping effect. The mechanism underlying associated trap concentration modulation investigated using thermoluminescence spectra. Additionally, 5% sample shows reversible thermally responsive color variation from blue red upon heating 283 393 K. Predesigned procedures based on single-wavelength-mediated photochromic and thermochromic emissions are designed rewritable optical data high-level encryption. Also, enhanced scheme mask encoding technique applying hybridized polyvinylidene difluoride film then proposed increase security level. Accordingly, this work provides feasible way rationally design offering more creative designs via

Language: Английский

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Tailoring Ultra‐Wide Visible‐NIR Luminescence by Ce³⁺/Cr³⁺/Yb³⁺‐alloying Sc‐Based Oxides for Multifunctional Optical Applications

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(15)

Published: Jan. 28, 2024

Abstract Visible‐to‐near‐infrared (VIS‐NIR) luminescent materials are in great demand the field of non‐destructive testing such as component determination and hyperspectral imaging. Although Cr 3+ ‐activated phosphors widely reported, controllable tailoring ultra‐wide VIS‐NIR luminescence excited by blue light is still a challenge. The strategies cationic substitution energy transfers effective for adjusting phosphors. In this work, series ‐doped Sc‐based solid solution (Ba 3‐m Sr m Sc 4 O 9 :Cr ) reported. Under excitation light, these exhibit broadband emission due to different centers induced occupying sites. Because weaker crystal strength, realizes with longer peak position (λ em = 820 nm) broader full width at half maximum (FWHM≈182 Ba 2 SrSc . Furthermore, Ce /Yb ions introduced into , achieving an (460–1200 →Cr →Yb multiple transfers. Designing beneficial improve quantum efficiency weaken thermal quenching. Finally, NIR phosphor‐converted light‐emitting diode (pc‐LED) fabricated demonstrates potential night‐vision water detection. This work provides design idea chemical transfer.

Language: Английский

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