Advanced Organic–Inorganic Hybrid Materials for Optoelectronic Applications

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 9, 2024

Abstract Research on organic–inorganic hybrid materials (OIHMs) has experienced explosive growth in the past decades. The diversity of organic components allows for introduction various spatial scales, functional groups, and polarities, while inorganic provide higher hardness, heat resistance, stability, their flexible combination facilitates formation diverse structures. Furthermore, simple cost‐effective synthesis methods, such as room temperature solution processes mechanochemical techniques, enable precise control over materials' properties at different thus achieving adjustable structure–performance relationships. This review will discuss recent research progress OIHMs within field optoelectronics related optoelectronic device applications. According to dimension nature interface, this divides into four structural categories. ongoing revealed applications fields solar cells, light‐emitting devices, detectors, memristors. As an outlook, potential perovskite 0D metal halide materials, which are currently most studied, enhancing performance stability is discussed.

Language: Английский

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Eu2+-doped oxyfluoride glass scintillator for X-ray imaging

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179428 - 179428

Published: Feb. 1, 2025

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Thermal‐Adaptive Photonic MOFs for High‐Performance X‐ray Scintillator

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

Published: March 3, 2025

Abstract Dynamic responsive scintillating materials play a significant role in advanced radiation detection technology. However, the issues such as thermal quenching, uncontrollable structure, and unsatisfactory cost, still remain obstacles to diversified development of recent scintillators. Herein, strategy is proposed by assembling well‐designed inorganic organic building units with low cost construct series novel lanthanide MOFs for thermal‐adaptive X‐ray scintillators (TAXS). Based on delicate energy level design, as‐obtained TAXS present ultra‐high relative light yield (max ≈49 700 photons MeV −1 ), tunable luminescence (from green red band), dose rate limit (min ≈118.7 nGy air s ). Importantly, these exhibit unique behaviors including thermal‐facilitated metal‐ligand distance contraction X‐ray‐induced carrier generation, resulting obvious enhanced radio‐luminescence. They maintain perfect linear response (R 2 > 99.8%) excellent stability (>95% after 215 Gy irradiation) during heat treatment. Both TAXS‐based membranes high imaging resolution ≈24 lp mm ) inks customizable printing demonstrate potential work normally at elevated temperatures. Such supports photonic functional fabricate high‐performance harsh condition services.

Language: Английский

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Mn²⁺-Induced Robust Radiation Hardness in Bi₄Ge₃O₁₂ for Next-Generation High-Energy Physical Colliders

Crystal Growth & Design, Journal Year: 2025, Volume and Issue: 25(5), P. 1477 - 1483

Published: Feb. 10, 2025

Future high-performance particle colliders, e.g., the proposed circular electron positron collider (CEPC) or future (FCC), demand unprecedented levels of accuracy in energy measurement for calorimeters. Although high-granularity crystal electromagnetic calorimeter has made great progress recent years, designing and matching Bi4Ge3O12 (BGO) scintillators with lower light output higher radiation resistance, as well not introducing slow components, lag far behind. Here, a Mn-doped BGO powder exhibits robust resistance faster decay time, accelerating by 15%. Doping Mn3% reduces intensities photoluminescence (PL) radioluminescence (RL) to 55% 22%, respectively, those observed pure powder. Furthermore, enhanced can maintain 72% initial RL intensity within 2 h high-power UV lamp, while that is severely degraded 45%. Theoretical calculation mechanism studies show Mn doping only maintains intrinsic luminescence but also introduces new intermediate level band inhibit formation color centers. This work provides avenue search discover from existing cost-effective high-energy physics experiments.

Language: Английский

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In Situ Crystallization of Copper(I)‐Based Hybrid Halides Assisted by Carboxymethylcellulose Sodium for a Large‐Area Scintillation Imaging Screen

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

Published: Feb. 23, 2025

Abstract Exploring new types of scintillators, especially fabricating large‐area scintillating screens, is essential in applications life science, industry, and material science. However, the thickness light scattering composite scintillator film present a major challenge for balancing spatial resolution radioluminescence intensity. Herein, an situ crystallization route developed to innovate preparation screens based on hybrid copper(I)‐based C 6 H 8 N 2 OCuX (X = I Br), which carboxymethylcellulose sodium (CMC‐Na) contribute “CMC‐Na membrane” formation further increase absorption cross‐section X‐ray radiation owing existence Na elements. The choice halogen can regulate photoluminescence I, Br, Cl) from cyan green then yellow, significant scintillation property be achieved OCuI with yield 52 000 photons MeV −1 detection limit 43.14 nGy s . Finally, high assisted by CMC‐Na, as well thin films help realize remarkable above 14 lp mm This study provides foundation discovering high‐performance halides scintillators offers creative think method imaging.

Language: Английский

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High-Resolution Flexible X-ray Imaging in a Two-Dimensional Mn²⁺-Doped Perovskite Scintillator

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Flexible scintillator screens characterized by high spatial resolution, low cost, and a simple fabrication process are in significant demand for applications medical diagnosis industrial detection. Here, we have demonstrated new Mn2+-doped two-dimensional (2D) Ruddlesden-Popper type perovskite, (4-tert-butylbenzylamine)2PbBr4:Mn, serving as highly efficient candidate. Doping with Mn2+ induces spin-forbidden internal transition (4T1g → 6A1g) that enhances the energy-transfer efficiency from strongly bound excitons of host material to d electrons ions, ultimately leading intense orange-red emission. This photoluminescence quantum yield (4-tert-butylbenzylamine)2PbBr4 (1) decreases its self-absorption. Therefore, at optimal Mn2+-doping concentration, 1:8.4%Mn2+ demonstrates light 21,532 Ph/MeV detection limit 198.19 nGyair s-1, exceeding performance commercial bismuth germanium oxide (BGO) scintillator. Furthermore, combined ultrafine powders poly(dimethylsiloxane) fabricate flexible films. With film thickness mass percentage 1:8.4%Mn2+, films achieve their maximum resolution 17.3 lp mm-1. The above results indicate exceptional scintillation imaging effectively addresses shortcomings current scintillators, thereby providing option family.

Language: Английский

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Eu2+ doped glass scintillators with high-scintillating performances for X-ray imaging

Materials Today Chemistry, Journal Year: 2025, Volume and Issue: 46, P. 102724 - 102724

Published: April 25, 2025

Language: Английский

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Cerium(III) Bromide Hybrid with Near-Unity Photoluminescence Quantum Efficiency for High-Resolution and Fast X-ray Imaging

Fundamental Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Blue Emission from Metal Halide Perovskites: Strategies and Applications

ChemPhotoChem, Journal Year: 2024, Volume and Issue: unknown

Published: June 11, 2024

Abstract Luminescent metal halides, as a type of luminescent semiconductor material, offer advantages that fulfill the requirements emerging light source devices, such high luminescence efficiency, good thermal stability, and tunable colorful emission. Blue being one three primary colors plays crucial role in field lighting displays. However, progress device performance blue‐light materials lags behind green red‐light materials. Currently, there have been numerous reports on halide perovskite materials, but comprehensive review development control halides is yet to be found. This paper provides summary design strategies mechanisms perovskites with various centers, well their application fields light‐emitting diodes (LEDs), X‐ray scintillators, information anti‐counterfeiting encryption. It also explores possible directions for subsequent improvement. work aims valuable insights recommendations future significant implications fabrication novel blue devices advancements detection technology.

Language: Английский

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High-Resolution Dual-Energy X-ray Imaging Enabled by Transparent Thermally Activated Delayed Fluorescence (TADF) Scintillation Screen

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 7(1), P. 250 - 256

Published: Dec. 16, 2024

Dual-energy X-ray imaging technology provides more detailed material-specific information by using a second spectrum. However, conventional dual-energy typically necessitates two separate exposures to combine high- and low-energy projections. This process can result in image misalignment increased radiation doses. Herein, system two-layered scintillator was developed, featuring transparent pure organic thermally activated delayed fluorescence (TADF) materials as the absorption layer LYSO high-energy layer. Separating energy bins on detector side enables simultaneous sequential acquisition of low- projections with single exposure. achieves high resolution 23 lp/mm, surpassing most single-layer scintillators. Additionally, effectiveness this demonstrated toolbox inspection, where complex objects inside were successfully imaged differentiated, capturing all intricate details

Language: Английский

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