Polar 3D Perovskitiod Constructed by Asymmetric Diamine for Stable Self‐Driven X‐Ray Detection DOI
Ailin Wang, Chengshu Zhang,

Qianwen Guan

et al.

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

Published: Nov. 27, 2024

Abstract Polar 3D organic–inorganic hybrid perovskites (OIHPs) with the bulk photovoltaic effect (BPVE) have important application value in self‐driven X‐ray detection, due to their excellent semiconductor properties. However, A‐site cations are limited by tolerance factor, making it difficult construct ABX 3 ‐type polar perovskites. Therefore, is necessary explore perovskitiods properties for detection. Herein, introducing an asymmetric diamine 3‐methylaminopropylamine (3‐MAPA) cation, a perovskitiod, (3‐MAPA)Pb 2 Br 6 ( 1 ) successfully constructed. Specifically, dipole‐oriented arrangement and intrinsic polarity of 3‐MAPA endow non‐centrosymmetric structure single crystal (SC). Notably, under irradiation, SC exhibits remarkable 0.8 V, which beneficial Consequently, ‐based detector shows sensitivity 101 µC Gy −1 s low detection limit 189 nGy at 0 V bias. Meanwhile, SC‐based less ion migration abundant N─H···Br hydrogen bonding interaction within structure, leading smaller dark current drift, supports stable This study attains based on perovskitiods, enriches candidates detectors.

Language: Английский

Hybrid Framework Materials: Next‐Generation Engineering Materials DOI Creative Commons

Jay McCarron,

Bethan Turner, Lauren McHugh

et al.

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

Published: Feb. 10, 2025

Hybrid organic–inorganic materials represent a fascinating class of compounds that combine the unique properties both organic and inorganic materials. This review provides an overview two classes hybrid materials: metal–organic frameworks perovskites, with their structures, applications, responses to external stimuli discussed. These hybrids leverage versatility molecules, for example, flexibility functionality, alongside robustness stability components through coordination between components. By tailoring composition structure, researchers have been able create multifunctional systems exhibit enhanced performance, such as improved mechanical strength, thermal stability, leading innovative applications across various fields, including optoelectronics, gas storage/separation, catalysis. The emerging field glasses is also discussed it represents novel frontier in design materials, combining nature functional With several key areas active research discussed, future framework obstacles must be overcome, synthesis at scale ambient conditions, see widespread modern world, speculated.

Language: Английский

Citations

0
Achieving High Loading Capacity of Perovskite Nanocrystals in Pore-Reamed Metal–Organic Frameworks for Bright Scintillators DOI

Linyuan Gu,

Zhi Yang,

Jiangtao Cui

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

Lead halide perovskite nanocrystal (PNC) scintillators featuring a fast decay and high radiation hardness have garnered significant attention. A PNC loading is essential to ensure strong X-ray absorption for scintillator applications, but concentrated PNCs tend aggregate in the solid state, resulting emission quenching. Employing dispersion medium offers promising strategy produce high-loading solids without agglomeration. Herein, we synthesize CsPbBr3 PNC/metal-organic framework (MOF) nanostructures achieve within MOF hosts. The macroporous cavities of hierarchically porous (HP) MOFs can host more than confined nanometer-scale spaces microporous MOFs. Additionally, surface-rich structure aids dispersing PNCs, effectively reducing aggregation-induced We find that HP-MOFs ratio 75%, as well less-aggregated PNCs. As result, PNC/HP-MOF exhibits 2.3 times higher light yield scintillator, primarily from enhanced luminance efficiency well-dispersed bright features nanostructure enable static dynamic imaging industrial inspection applications. These findings highlight constructing crucial advancing applications scintillators.

Language: Английский

Citations

0
Cationic Substituent Engineering to Enhance Glassy Stability of Manganese Halide Scintillators for Advanced 3D X‐ray Reconstruction DOI
Zijian Zhou,

Xue Yu,

Rongrong Hu

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Abstract Organic–inorganic hybrid manganese(II) halide glasses exhibit advantages such as exceptional optical transparency, straightforward preparation processes, and potential for large‐scale production. However, the crystallization phenomenon easily occurring in this glass material can induce a marked reduction which significantly compromises its X‐ray imaging performance. Herein, cationic substituent regulation strategy is developed to improve glassy stability of halides. By replacing phenyl group Ph‐Mn cation with methylcyclohexyl substituent, novel MCy‐Mn successfully synthesized. Such substitution effectively weaken both cation–anion interactions π – stacking within lattice, resulting remarkable melting point (T m ). Moreover, inherent rigid structure also confers an elevated transition temperature g Consequently, resultant crystal demonstrates high T /T ratio 0.82. Besides, fabricated scintillation exhibits spatial resolution 19.3 lp mm −1 has achieved 3D reconstruction. As anticipated, outstanding environmental stability, no observed after being exposed atmospheric conditions 30 days. This work provides valuable insights development high‐stability metal glasses.

Language: Английский

Citations

0
Near-infrared scintillation characteristics of Nd3+-activated La2O3–TiO2–TeO2 glass and glass ceramics DOI Creative Commons
Shuntaro Muneta,

Naoki Kawano,

Daisuke Nakauchi

et al.

Materials Research Bulletin, Journal Year: 2025, Volume and Issue: unknown, P. 113544 - 113544

Published: May 1, 2025

Language: Английский

Citations

0
Scintillation of colloidal nanocrystals DOI
Benjamin T. Diroll, Burak Güzeltürk

The Journal of Chemical Physics, Journal Year: 2024, Volume and Issue: 161(12)

Published: Sept. 23, 2024

Scintillators are materials that convert ionizing radiation in the form of particles or photons into low-energy ultraviolet to near-infrared spectral range. This work reviews efforts use colloidal nanocrystals as scintillator materials. To date, research on scintillators has focused doped phosphor systems, quantum dots and related structures, perovskite-based nanocrystals. Among various material classes forms, semiconductor stand out thanks their appealing fluorescence properties, yet understanding radioluminescence cathodoluminescence is incomplete. review discusses fundamental limits design challenges toward achieving high brightness, fast speed, durable performance with nanocrystal scintillators. First, this describes basic principles efficiency limitations scintillation, particularly large influence multiple exciton generation many species, well metrics. Second, methods for measurement described. Third, we results main scintillators, including particles, perovskites, doped-phosphor particles. Fourth, scintillation imaging discussed terms relevant metrics obtained using Finally, note strengths weaknesses discuss potential areas further development.

Language: Английский

Citations

0
Polar 3D Perovskitiod Constructed by Asymmetric Diamine for Stable Self‐Driven X‐Ray Detection DOI
Ailin Wang, Chengshu Zhang,

Qianwen Guan

et al.

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

Published: Nov. 27, 2024

Abstract Polar 3D organic–inorganic hybrid perovskites (OIHPs) with the bulk photovoltaic effect (BPVE) have important application value in self‐driven X‐ray detection, due to their excellent semiconductor properties. However, A‐site cations are limited by tolerance factor, making it difficult construct ABX 3 ‐type polar perovskites. Therefore, is necessary explore perovskitiods properties for detection. Herein, introducing an asymmetric diamine 3‐methylaminopropylamine (3‐MAPA) cation, a perovskitiod, (3‐MAPA)Pb 2 Br 6 ( 1 ) successfully constructed. Specifically, dipole‐oriented arrangement and intrinsic polarity of 3‐MAPA endow non‐centrosymmetric structure single crystal (SC). Notably, under irradiation, SC exhibits remarkable 0.8 V, which beneficial Consequently, ‐based detector shows sensitivity 101 µC Gy −1 s low detection limit 189 nGy at 0 V bias. Meanwhile, SC‐based less ion migration abundant N─H···Br hydrogen bonding interaction within structure, leading smaller dark current drift, supports stable This study attains based on perovskitiods, enriches candidates detectors.

Language: Английский

Citations

0