Recent progress on solar blind deep ultraviolet photodetectors based on metal halide perovskites

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(21), P. 7497 - 7512

Published: Jan. 1, 2024

This review introduced the research progress and present situation of solar blind detectors based on metal halide perovskite (MHP) in recent years from different dimensions: three-dimensional, two-dimensional, one-dimensional zero dimensional.

Language: Английский

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Single‐Source Evaporated High‐Quality Single‐Phase Cs₃Cu₂I₅ Scintillator Films for High Performance X‐Ray Imaging

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

Published: March 29, 2024

Abstract Vacuum‐evaporated metal halides (MHs) scintillator thick films have received much attention in the X‐ray imaging field due to their excellent light yield and uniform large‐area preparation. However, inevitable heteromorphic homologs MHs (e.g., Copper‐based (Cu‐MHs): CsCu 2 X 3 ∖Cs Cu 5 ) change of film structural backbone will result spectral hybridization (phase purity), eventually detaches (lattice mismatches). Herein, a single‐source vacuum evaporation method prepare (≈10 µm) Cu‐MHs (as an example) scintillators is realized: 1) Presynthesis pure phase materials by solution with protective agent ensure purity without precise control component ratios process; 2) One‐shot formation avoids stress accumulation utilize longitudinal growth characteristics crystalline obtain crystal orientations better optical outputs. Finally, obtained comparable partially single‐crystal (53 983 photons MeV −1 resolution (14.1 lp mm partial template method. The detection system based on prepared exhibits good response speed linearity different radiation intensities exposure times. further drive application believed.

Language: Английский

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Medical imaging: A Critical Review on X-ray Imaging for the Detection of Infection

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

Published: July 15, 2024

Medical imaging is critical in detecting and managing infections, with X-ray being a cornerstone this domain. This review provides an overview of principles, including the basic mechanisms underlying absorption image formation. Emerging trends for various such as respiratory bone joint fungal viral are discussed detail. Some advantages over other techniques infection detection highlighted, along recent technological advancements techniques. Key topics covered include film-screen radiography, computed flat-panel detector-based evolution thin-film transistor array-based digital radiography. Additionally, principles direct indirect conversion detectors explored, primary physical parameters spatial resolution, contrast, noise, modulation transfer function (MTF), detective quantum efficiency (DQE). Furthermore, application tomography (CT) 3D radiography role microscopy discussed. Clinical implications elaborated, its early diagnosis, assessment disease progression, identification complications, guidance interventional procedures, screening high-risk populations. Recommendations optimizing clinical practice suggestions future research directions provided. In summary, offers insights into current state detection, highlighting significance research.

Language: Английский

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Flexible Single Microwire X‐Ray Detector with Ultrahigh Sensitivity for Portable Radiation Detection System

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

Published: Aug. 19, 2024

Abstract Sensitive, flexible, and low false alarm rate X‐ray detector is crucial for medical diagnosis, industrial inspection, scientific research. However, most semiconductors detectors are susceptible to interference from ambient light, their high thickness hinders application in wearable electronics. Herein, a flexible visible‐blind ultraviolet‐blind based on Indium‐doped Gallium oxide (Ga 2 O 3 :In) single microwire prepared. Joint experiment−theory characterizations reveal that the Ga :In possess crystal quality, large band gap, satisfactory stability, reliability. On this basis, an extraordinary sensitivity of 5.9 × 10 5 µC Gy air −1 cm −2 detection limit 67.4 nGy s achieved prepared Ag/Ga :In/Ag device, which has outstanding operation stability excellent temperature stability. Taking advantage properties microwire, portable system demonstrated shows potential adapt lightweight formats. The proposed enables real‐time monitor X‐rays, can be displayed user interface. More importantly, it resistance natural light interference, showing rate. This work provides feasible method exploring high‐performance integrated micro/nano devices.

Language: Английский

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All‐In‐One Double Perovskite Flexible Film with Highly Efficient Warm‐White Emission, Near‐Infrared Emission, and X‐Ray Radioluminescence

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

Published: Feb. 10, 2025

Abstract Recently, lead‐free double perovskites have gained much attention for their superior optoelectronic properties. However, realizing efficient white light and near‐infrared (NIR) emission, as well bright radioluminescence (RL) in a single compound has not yet been reported. Herein, Bi 3+ /Mo 4+ ‐codoped Cs 2 Ag 0.6 Na 0.4 InCl 6 perovskite is synthesized by hydrothermal reaction. Under photoexcitation, the codoped exhibits highly broadband warm‐white emission (610 nm) NIR (930 nm), which can be attributed to self‐trapped exciton of d–d transition Mo , respectively. Interestingly, also emits strong with yield 25100 photons per MeV under X‐ray irradiation. Based on /PDMS flexible film, its applications emitting diodes (WLED), source, scintillator are demonstrated, respectively, all exhibit remarkable Finally, as‐fabricated devices light, NIR, imaging further demonstrated pixel‐level image fusion realized without pixel mismatch complex processing. Therefore, internal information capsule wrapped centrifuge tube iron wire successfully through fusion.

Language: Английский

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Manganese (II) Halides for X‐Ray Imaging and Moisture Detection

Advanced Materials Technologies, Journal Year: 2024, Volume and Issue: 9(8)

Published: Feb. 20, 2024

Abstract Organic–inorganic hybrid metal halides are widely used in X‐ray detection and imaging due to their high absorption efficiency, ease of synthesis, efficient luminescence. However, the issue lead toxicity remains a concern. In this study, non‐toxic, 0D 2,2′‐(Ethylenedioxy)bis(ethylamine) manganese (II) bromide (EDBEMnBr 4 ) is synthesized using simple mechanical grinding method solution that exhibits intense green emission at ≈525 nm. Moreover, change structure under influence temperature water significantly affects its fluorescence color UV light. Scintillator materials with without moisture exposure showed spatial resolutions 7 lp mm −1 , low limits 4.62 5.25 µGy air s respectively, meeting medical industry standards (<5.5 ). Furthermore, based on apparent luminescence triggered by for EDBEMnBr preliminary attempt made apply it humidity monitoring showing boundary has good linear dependence time. This work provides new opportunities Mn‐based both as well detection.

Language: Английский

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Retinomorphic X-ray detection using perovskite with hydrion-conductive organic cations

The Innovation, Journal Year: 2024, Volume and Issue: 5(4), P. 100654 - 100654

Published: June 5, 2024

X-ray detection is crucial across various sectors, but traditional techniques face challenges such as inefficient data transmission, redundant sensing, high power consumption, and complexity. The innovative idea of a retinomorphic detector shows great potential. However, its implementation has been hindered by the absence active layers capable both detecting X-rays serving memory storage. In response to this critical gap, our study integrates hybrid perovskite with hydrion-conductive organic cations develop groundbreaking detector. This novel device stands at nexus technological innovation, utilizing detection, memory, preprocessing capabilities within single hardware platform. core mechanism underlying innovation lies in transport electrons holes metal halide octahedral frameworks, enabling precise detection. Concurrently, hydrion movement through endows short-term resistive facilitating rapid processing retrieval. Notably, boasts an array formidable features, including reconfigurable linear curve, extended retention time. practical terms, translates into efficient capture motion projections minimal data, achieving compression ratio 18.06% impressive recognition accuracy up 98.6%. essence, prototype represents paradigm shift technology. With transformative capabilities, poised revolutionize existing landscape.

Language: Английский

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Tailoring Multi‐Phenyl Ring Cation for Stable Scalable Hybrid Bismuth Iodide Amorphous Film: Enabling Record Sensitivity and High‐Performance X‐Ray Array Imaging

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)

Published: June 22, 2024

The 329-type bismuth (Bi)-based metal halide (MH) polycrystalline films have potential to be applied in the new generation of X-ray imaging technology owing high absorption coefficients and excellent detection properties. However, mutually independent [Bi

Language: Английский

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Micro/Nano Engineering Advances Next-Generation Flexible X-ray Detectors

ACS Nano, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 23, 2024

The growing demands for X-ray imaging applications impose diverse and stringent requirements on advanced detectors. Among these, flexibility stands out as the most expected characteristic next-generation Flexible detectors can spatially conform to nonflat surfaces, substantially improving resolution, reducing exposure dosage, enabling extended application opportunities that are hardly achievable by conventional rigid flat-panel Over past years, indirect- direct-conversion flexible have made marvelous achievements. In particular, microscale nanoscale engineering technologies play a pivotal role in defining optical, electrical, mechanical properties of this Perspective, we spotlight recent landmark advancements from aspects micro/nano strategies, which broadly categorized into two prevailing modalities: materials-in-substrate materials-on-substrate. We also discuss existing challenges hindering development detectors, well prospective research mitigate these issues.

Language: Английский

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Dion‐Jacobson Type Lead‐Free Double Perovskite with Ultra‐Narrow Aromatic Interlayer Spacing for Highly Sensitive and Stable X‐ray Detection

Small, Journal Year: 2024, Volume and Issue: 20(30)

Published: March 8, 2024

Abstract The low‐toxic and environmentally friendly 2D lead‐free perovskite has made significant progress in the exploration of “green” X‐ray detectors. However, gap detection performance between them their lead‐based analogues remains a matter concern that cannot be ignored. To reduce this gap, shortening interlayer spacing to accelerate migration collection carriers is promising strategy. Herein, Dion‐Jacobson (DJ) double (4‐AP) 2 AgBiBr 8 ( 1 , 4‐AP = 4‐amidinopyridine) with an ultra‐narrow 3.0 Å, constructed by utilizing π‐conjugated aromatic spacers. Strikingly, subsequent enhanced carrier transport increased crystal density lead detectors based on bulk single crystals high sensitivity 1117.3 µC Gy −1 cm −2 superior vast majority similar perovskites. In particular, tight connection inorganic layers divalent cations enhances structural rigidity stability, further endowing detector ultralow dark current drift (3.06 × 10 −8 nA s V 80 V), excellent multiple cycles switching irradiation as well long‐term environmental stability (maintains over 94% photoresponse after 90 days). This work brings perovskites one step closer realizing efficient practical green applications.

Language: Английский

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