Metal-Halide Perovskite Submicrometer-Thick Films for Ultra-Stable Self-Powered Direct X-Ray Detectors

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: April 26, 2024

Metal-halide perovskites are revolutionizing the world of X-ray detectors, due to development sensitive, fast, and cost-effective devices. Self-powered operation, ensuring portability low power consumption, has also been recently demonstrated in both bulk materials thin films. However, signal stability repeatability under continuous exposure only tested up a few hours, often reporting degradation detection performance. Here it is shown that self-powered direct fabricated starting from FAPbBr

Language: Английский

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Perovskite materials in X-ray detection and imaging: recent progress, challenges, and future prospects

RSC Advances, Journal Year: 2024, Volume and Issue: 14(10), P. 6656 - 6698

Published: Jan. 1, 2024

Perovskite-based X-ray detection and imaging have reached new milestones due to rapid advancements in evolution of materials, cost-effective fabrication techniques, architectural modifications device design.

Language: Английский

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Micro/Nano Perovskite Materials for Advanced X-ray Detection and Imaging

ACS Nano, Journal Year: 2024, Volume and Issue: 18(8), P. 6095 - 6110

Published: Feb. 19, 2024

Halide perovskites have emerged as highly promising materials for ionizing radiation detection due to their exceptional characteristics, including a large mobility-lifetime product, strong stopping power, tunable band gap, and cost-effective crystal growth via solution processes. Semiconductor-type X-ray detectors employing various micro/nano perovskite shown impressive progress in achieving heightened sensitivity lower limits. Here, we present comprehensive review of the applications direct type detection, with focus on requirements assembly device properties advanced detectors. We explore diverse processing techniques optoelectronic considerations applied Additionally, this highlights challenges opportunities detector arrays real-world applications, potentially necessitating further research efforts.

Language: Английский

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Unlocking the Potential of Organic‐Inorganic Hybrid Manganese Halides for Advanced Optoelectronic Applications

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

Published: Aug. 5, 2024

Organic-inorganic hybrid manganese(II) halides (OIMnHs) have garnered tremendous interest across a wide array of research fields owing to their outstanding optical properties, abundant structural diversity, low-cost solution processibility, and low toxicity, which make them extremely suitable for use as new class luminescent materials various optoelectronic applications. Over the past years, plethora OIMnHs with different dimensionalities multifunctionalities such efficient photoluminescence (PL), radioluminescence, circularly polarized luminescence, mechanoluminescence been newly created by judicious screening organic cations inorganic Mn(II) polyhedra. Specifically, through precise molecular engineering, series near-unity PL quantum yields, high anti-thermal quenching excellent stability in harsh conditions devised explored applications light-emitting diodes (LEDs), X-ray scintillators, multimodal anti-counterfeiting, fluorescent sensing. In this review, latest advancements development are summarized, covers from fundamental physicochemical properties advanced applications, an emphasis on functionality design especially LEDs detection imaging. Current challenges future efforts unlock potentials these promising also envisioned.

Language: Английский

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Dense Stacking of Millimeter‐Sized Perovskite Single Crystals for Sensitive and Low‐Bias Hard X‐Ray Detection

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(22)

Published: Feb. 4, 2024

Abstract Metal halide perovskite single crystals are promising for hard X‐ray detection, but growth of large‐sized thin and inhibition ion migration under high bias challenging. Herein, the preparation dense stacking oriented millimeter‐sized with capability large‐area fabrication, controlled thickness, activation energy ( E a)is reported. The results in absence grain boundaries parallel substrates, leading to large carrier mobility‐lifetime µτ ) product 2.7 × 10 −3 cm 2 V −1 , which is comparable values many bulk crystals. Under low bias, detectors exhibit sensitivity 1.2 4 µC Gy −2 detection limit 87.5 nGy s those single‐crystal bias. Moreover, combination a weak small dark current drift 3.2 −4 nA v . Benefited from superior detector performance, high‐contrast imaging can be obtained at dose rate 1.26 µGy work may promote application practical area.

Language: Английский

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Enhancing the Water‐Stability of 1D Hybrid Manganese Halides by a Cationic Engineering Strategy

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(13)

Published: Feb. 13, 2024

Abstract Although the luminescent performance of organic–inorganic metal halides (OIMHs) have obtained significant advances, achieving intrinsic water‐stable OIMHs remain a substantial challenge due to fragile ionic nature hybrid halide structure. To overcome these challenges, structural design strategy is proposed that involves use highly hydrophobic cations as protective layer improve water stability OIMH. Herein, an aprotic trimethylsulfoxonium [TMSO] + selected cation and successfully assemble two new manganese based (TMSO)MnCl 3 (TMSO)MnBr through facile solid liquid phase reaction methods. Remarkably, exhibit strong red light emissions with high quantum yields recorded at 86.1% 53.4%, respectively, originating from octahedral [MnX 6 ] 4− one‐dimensional (1D) − chain. Most significantly, present extraordinary stabilities toward continuous corrosion by humid air, water, acid‐aqueous solution for more than one month, suggesting promising application prospects in extreme chemical environments. In‐depth Hirshfeld surface calculations demonstrate ultrahigh water‐stability benefits abundant hydrogen bonds electrostatic interactions between ions, which provides underlying insight into mechanism. This enhancement represents breakthrough engineering rationally

Language: Английский

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Direct Ink Writing of Single‐Crystal‐Assembled Perovskite Thick Films for High‐Performance X‐ray Flat‐Panel Detectors

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

Published: Jan. 3, 2025

Abstract Halide perovskites hold great potential in developing next‐generation X‐ray detectors. However, preparing high‐quality and thick perovskite films a way compatible with thin‐film transistor (TFT)‐integrated flat‐panel detectors (XFPDs) remains challenging. Here, by engineering ink effective printability shape fidelity, direct writing (DIW) is developed as new approach to printing unique single‐crystal‐assembled (SCAP) film. In contrast polycrystalline grains consisting of randomly orientated crystal domains, the SCAP made tightly packed crystals well‐defined facets, showing 3–4 orders magnitude lower trap density (4.48 × 10 12 cm −3 ). Consequently, offers state‐of‐the‐art detection performance (sensitivity‐to‐dark current ratio: 1.26 11 µC Gy air −1 A ), low limit (114.2 nGy s negligible baseline drift (0.27 fA V Furthermore, XFPD based on 64 pixelated TFT array realizes high‐resolution digital radiography, opening avenue for further development

Language: Английский

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Homogeneous Bridging Induces Compact and Scalable Perovskite Thick Films for X‐Ray Flat‐Panel Detectors

Small, Journal Year: 2023, Volume and Issue: 19(52)

Published: Aug. 27, 2023

Abstract Solution‐processed organic–inorganic hybrid perovskite polycrystalline thick films have shown great potential in X‐ray detection. However, the preparation of compact with large area is still challenging due to limitation feasible ink formulation and pinholes caused by solvent volatilization. Post‐treatment hot‐pressing are usually involved improve film quality, which however unsuitable for subsequent integration. In this work, a homogeneous bridging strategy developed prepare directly. A stable slurry suitable viscosity consisting undissolved grains supersaturated solution formed adding weak coordination pre‐synthesized microcrystalline powders. Small situ grow from saturated during annealing, filling connecting surrounding original grains. As result, large‐area tight grain arrangement ultralow current drift blade‐coated achieve imaging. The optimal device displays an impressive mobility‐lifetime product 2.2 × 10 −3 cm 2 V −1 champion ratio sensitivity dark density 2.23 11 µC Gy air . This work provides simple effective route high‐quality films, instructive development perovskite‐based flat‐panel detectors.

Language: Английский

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High‐performance 110 kVp hard x‐ray detector based on all‐crystalline‐surface passivated perovskite single crystals

InfoMat, Journal Year: 2024, Volume and Issue: 6(8)

Published: June 18, 2024

Abstract Halide perovskite single crystals (SCs) have attracted much attention for their application in high‐performance x‐ray detectors owing to desirable properties, including low defect density, high mobility–lifetime product ( μτ ), and long carrier diffusion length. However, suppressing the inherent defects perovskites overcoming ion migration primarily caused by these remains a challenge. This study proposes facile process dipping Cs 0.05 FA 0.9 MA PbI 3 SCs synthesized solution‐based inverse temperature crystallization method into 2‐phenylethylammonium iodide (PEAI) solution reduce number of defects, inhibit migration, increase sensitivity. Compared conventional spin coating, this simple forms two‐dimensional PEA 2 4 layer on all SC surfaces without further treatment, effectively passivating inherently defective minimizing migration. As result, PEAI‐treated SC‐based detector achieves record sensitivity 1.3 × 10 5 μC Gy air −1 cm −2 with bias voltage 30 V at realistic clinical dose rates 1–5 mGy s (peak potential 110 kVp), which is 6 times more sensitive than an untreated orders magnitude commercial α‐Se‐based detector. Furthermore, PEAI‐treated‐perovskite exhibits detection limit (73 nGy improved response, clear images scanning method, highlighting effectiveness PEAI approach fabricating next‐generation detectors. image

Language: Английский

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Dense Perovskite Thick Film Enabled by Saturated Solution Filling for Sensitive X-ray Detection and Imaging

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(28), P. 36649 - 36657

Published: July 3, 2024

Thick polycrystalline perovskite films synthesized by using solution processes show great potential in X-ray detection applications. However, due to the evaporation of solvent, many pinholes and defects appear thick films, which deteriorate their optoelectronic properties diminish performance. Therefore, preparation large area dense is desired. Herein, we propose an effective strategy filling pores with a saturated precursor solution. By adding film, original film will not be destroyed because solution-solute equilibrium relationship. Instead, it promotes situ crystal growth within during annealing process. The loosely packed grains are connected, partially filled fixed. Finally, much denser improved has been obtained. optimized exhibits sensitivity 1616.01 μC Gyair–1 cm–2 under electric field 44.44 V mm–1 low limit 28.64 nGyair s–1 22.22 mm–1. These values exceed 323.86 40.52 pristine measured same conditions. also shows promising working stability imaging capability.

Language: Английский

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