Bright Transparent Glass‐Ceramic Scintillators With High Fraction (Ca, Sr, Ba)1‐xYxF2+x: Tb Nanocrystals Precipitation for X‐ray Low‐Dose Detection and High‐Resolution Imaging DOI

Qunhuo Liu,

Peng Ran,

Weilin Chen

et al.

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

Published: Nov. 2, 2024

Abstract Transparent glass‐ceramic (GC) scintillator offers cost‐effective and large‐scale preparation for high‐resolution X‐ray imaging detectors. However, it remains difficult to precipitate a high fraction of lanthanide activated fluoride nanocrystals that determine scintillation properties in glass. Herein, an ionic‐covalent fluoroaluminate‐phosphate glass network structure is constructed by combining simulation experimental study, which enables the precipitation (Ca, Sr, Ba) 1‐x Y x F 2+x : Tb with crystallinity (30.11%). By adjusting doping concentration, heat treatment temperature duration, internal quantum efficiency 76.07%, steady‐state light yield 12710 photons MeV −1 lowest detection 180 nGy air s are obtained. Finally, (23.4 lp mm ) application realized using GC scintillator. This provides new option development low‐cost, high‐performance scintillators low‐dose applications.

Language: Английский

Persistent scintillators for X-ray repetitive imaging with stable energy traps DOI
Yuan Wang, Peng Zhang,

Xu Tian

et al.

Journal of Rare Earths, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

1
Charge separation state carrier storage-triggered thermally activated delayed phosphorescence in an organic scintillator DOI Creative Commons

Ruoyu Cao,

Yubing Si, Qi Yang

et al.

National Science Review, Journal Year: 2025, Volume and Issue: 12(5)

Published: Feb. 12, 2025

ABSTRACT Organic scintillators are among the most promising due to their inherent merits in terms of heavy metal–free constituents, synthesis designability, affordability raw materials, and low usage costs. However, limited X-ray excited luminescence (XEL) property organic affects application. To date, main approaches for improving XEL have focused on introducing atoms increase absorbance X-rays establishing new pathways, such as thermally activated delayed fluorescence (TADF), exciton utilization efficiency. Even so, is not ideal compared with that commercial inorganic scintillators. In this work, a highly stable charge separation (CS) state trap was introduced into design an scintillator. Combined unique phosphorescence (TADP) process, efficient capture conversion high-energy carriers realized. As result, generation efficiency dramatically increases, ultrahigh intensity, afterglow imaging at room temperature achieved first time. This work provides brand-new strategy high-performance

Language: Английский

Citations

1
Micro/Nano Engineering Advances Next-Generation Flexible X-ray Detectors DOI
Xiangyu Ou,

Zhongzhu Hong,

Qinxia Wu

et al.

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

Citations

6
Boosting X‐Ray‐Activated Persistent Luminescence in Nanoparticles Toward Highly Accurate Flexible X‐Ray Imaging and Information Security DOI Open Access

Guohui Wei,

Chao Wang,

Jinshu Huang

et al.

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

Published: Feb. 21, 2025

Abstract The X‐ray activated persistent luminescence (PersL) observed in lanthanide‐doped nanoparticles has recently attracted widespread interest both basic research and cutting‐edge applications. However, how to realize intense, rich, color‐tunable PersL remained a challenge. Here conceptual strategy is reported enhance the X‐ray‐activated of by minimizing hydroxyl impurities inside host lattice. This study shows that anhydrides/acids treatment during synthetic procedures able reduce fluoride nanocrystal lattice markedly, promote formation Frenkel defects moving more F − ions from their sites into interstitial under irradiation. A mechanism proposed illustrate enhancement hydroxyl‐minimized nanoparticles. radioluminescence also enhanced, multimode single nanoparticle further obtained core‐shell nanostructure design with temporally tunable multi‐colors output. These findings facilitate development small‐size nanomaterials provide opportunities for frontier applications optical storage, information identification, flexible imaging.

Language: Английский

Citations

0
Advances and Challenges in X-ray-Excited Scintillators and Their Biomedical Applications: Current Insights and Future Directions DOI
Taiyi Zhang,

Xuezhen Dong,

Fei Xu

et al.

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

Published: April 7, 2025

This review explores the pivotal role of scintillators in biomedical applications, with a particular emphasis on their utilization context X-ray excitation. It commences an in-depth analysis two predominant categories scintillators: inorganic and organic, meticulously delineating distinctive properties respective applications. The discourse subsequently advances to explore critical applications X-ray-excited (XESs), underscoring significant advancements medical imaging, radiation detection, dosimetry. Moreover, identifies prevailing challenges limitations deployment these for purposes, thereby establishing robust foundation ongoing research endeavors. outlines potential directions, advocating interdisciplinary collaborations overcome existing barriers. By synthesizing current knowledge identifying areas future investigation, this aims guide researchers enhancing efficacy application science.

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
Bright Transparent Glass‐Ceramic Scintillators With High Fraction (Ca, Sr, Ba)1‐xYxF2+x: Tb Nanocrystals Precipitation for X‐ray Low‐Dose Detection and High‐Resolution Imaging DOI

Qunhuo Liu,

Peng Ran,

Weilin Chen

et al.

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

Published: Nov. 2, 2024

Abstract Transparent glass‐ceramic (GC) scintillator offers cost‐effective and large‐scale preparation for high‐resolution X‐ray imaging detectors. However, it remains difficult to precipitate a high fraction of lanthanide activated fluoride nanocrystals that determine scintillation properties in glass. Herein, an ionic‐covalent fluoroaluminate‐phosphate glass network structure is constructed by combining simulation experimental study, which enables the precipitation (Ca, Sr, Ba) 1‐x Y x F 2+x : Tb with crystallinity (30.11%). By adjusting doping concentration, heat treatment temperature duration, internal quantum efficiency 76.07%, steady‐state light yield 12710 photons MeV −1 lowest detection 180 nGy air s are obtained. Finally, (23.4 lp mm ) application realized using GC scintillator. This provides new option development low‐cost, high‐performance scintillators low‐dose applications.

Language: Английский

Citations

0