Radiation polymerized CsPbBr3-PMMA nanocomposite for alpha particle detection

Chhangani, Sumit; Kumar, Monu; Sahani, R.M.; Bera, Anuradha; Pandya, Arun

doi:10.1016/j.matpr.2021.06.432

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…This approach was exploited in its most simple and effective way by Chhangani. [ 339 ] The authors prepared CsPbBr 3 NCs directly in the methyl methacrylate (MMA) monomer by the modified RTP method and this solution was directly polymerized by gamma irradiation without any catalysts. However, some degree of aggregation occurred in MMA already.…”

Section: Halide Perovskite Ncsmentioning

confidence: 99%

Advanced Halide Scintillators: From the Bulk to Nano

Vaněček

Děcká

Mihóková

et al. 2022

Advanced Photonics Research

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Halide scintillators have been playing a crucial role in the detection of ionizing radiation since the discovery of scintillation in NaI:Tl in 1948. The discovery of NaI:Tl motivated the research and development (R&D) of halide scintillators, resulting in the development of CsI:Tl, CsI:Na, CaF2:Eu, etc. Later, the R&D shifted toward oxide materials due to their high mechanical and chemical stability, good scintillation properties, and relative ease of bulk single‐crystal growth. However, the development in crystal growth technology allows for the growth of high‐quality single crystals of hygroscopic and mechanically fragile materials including SrI2 and LaBr3. Scintillators based on these materials exhibit excellent performance and push the limits of inorganic scintillators. These results motivate intense research of a large variety of halide‐based scintillators. Moreover, materials based on lead halide perovskites find applications in the fields of photovoltaics, solid‐state lighting, and lasers. The first studies show also the significant potential of lead halide perovskites as ultrafast scintillators in the form of nanocrystals. The purpose of this review is to summarize the R&D in the field of halide scintillators during the last decade and highlight perspectives for future development.

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Section: Halide Perovskite Ncsmentioning

confidence: 99%

Advanced Halide Scintillators: From the Bulk to Nano

Vaněček

Děcká

Mihóková

et al. 2022

Advanced Photonics Research

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“…[ 7 ] However, many research groups did not observe any γ ‐ray signal by CsPbBr 3 . [ 8 ] This has led to controversy regarding the detection efficiency of γ ‐ray of CsPbBr 3 crystal. Consensus has been reached that low detection efficiency arises from unexpected secondary phase, indicating CsPb 2 Br 5 significantly reduces detection efficiency.…”

Section: Introductionmentioning

confidence: 99%

High‐Performance Industrial‐Grade CsPbBr₃ Single Crystal by Solid–Liquid Interface Engineering

Sun

Xiao

et al. 2023

Advanced Science

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All‐inorganic metal halide perovskite CsPbBr3 crystal is regarded as an attractive alternative to high purity Ge and CdZnTe for room temperature γ‐ray detection. However, high γ‐ray resolution is only observable in small CsPbBr3 crystal; more practical and deployable large crystal exhibits very low, and even no detection efficiency, thereby thwarting prospects for cost‐effective room temperature γ‐ray detection. The poor performance of large crystal is attributed to the unexpected secondary phase inclusion during crystal growth, which traps the generated carriers. Here, the solid–liquid interface during crystal growth is engineered by optimizing the temperature gradient and growth velocity. This minimizes the unfavorable formation of the secondary phase, leading to industrial‐grade crystals with a diameter of 30 mm. This excellent‐quality crystal exhibits remarkably high carrier mobility of 35.4 cm2 V−1 s−1 and resolves the peak of 137Cs@ 662 keV γ‐ray at an energy resolution of 9.91%. These values are the highest among previously reported large crystals.

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“…PMMA is characterised by high transparency in the visible spectrum, and good thermal and mechanical strength. It is widely used in different applications like optoelectronics, micro-photonics, as an alternative for glass in solar cells, optical lenses, UV photolithography, ion-beam lithography, diffractive optics devices (Bao et al 2006) and as a host material with different nanoparticles for different applications, like gamma-ray shielding performance (Cao Da et al 2020) and shielding purposes from UV photons and its optical applications (Rishi Pal Chahal et al (2015); Rishi Pal Chahal et al (2016)), in dosimetry (Beigzadeh, Rashidian Vaziri (2021), Abdullahi et al 2022), in alpha particle detection (Chhangani et al 2021). Due to the growing demand for manufactured polymeric materials, the improvement of its properties should be investigated using a variety of methods.…”

Section: Introductionmentioning

confidence: 99%

Improving photoluminescence, optical and electrical characteristics of PMMA films with gamma irradiation

Zaki¹,

Shubayr²,

Radwan³

et al. 2021

Phys. Scr.

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Polymeric materials are macromolecules, essentially a combination of numerous repeated subunits. Polymers are innovative and advanced materials that currently have a strong impact on our daily lives. In recent years, polymer use has been prominent due to the materials’ distinctive properties; thus, they entered different fields of science, technology and industrial-biomedical applications.The improvement of photoluminescence, optical and electrical characteristics of non-conducting Poly(methyl methacrylate) (PMMA) films was studied. Upon gamma irradiation of various doses, the photophysical and electrical properties of PMMA films were investigated using photoluminescence spectroscopy, ultraviolet–visible (UV-Vis) spectroscopy and the LCR Meter Bridge Circuit technique. The fluorescent response improved the photoluminescence (PL) spectral emission peaks according to gamma values. Strong fluorescence peaks appeared with the highest gamma dose. The UV–Vis results revealed a significant red-shift in the absorption edge as gamma doses increased. This shift exhibits a continuous decrease in the energy band gap values (from 3.50 to 2.60 eV for direct transition and from 3.05 to 1.55 eV for indirect transition). This was due to the formation of carbon clusters, which led to an increase in the electrical conductivity and improved the dielectric parameters of the irradiated PMMA films. Among a variety of measurements presented and discussed in the present study, the electrical measurements showed improved electrical characteristics of gamma-irradiated PMMA films.

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Radiation polymerized CsPbBr3-PMMA nanocomposite for alpha particle detection

Cited by 6 publications

References 13 publications

Advanced Halide Scintillators: From the Bulk to Nano

Advanced Halide Scintillators: From the Bulk to Nano

High‐Performance Industrial‐Grade CsPbBr₃ Single Crystal by Solid–Liquid Interface Engineering

Improving photoluminescence, optical and electrical characteristics of PMMA films with gamma irradiation

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Radiation polymerized CsPbBr3-PMMA nanocomposite for alpha particle detection

Cited by 6 publications

References 13 publications

Advanced Halide Scintillators: From the Bulk to Nano

Advanced Halide Scintillators: From the Bulk to Nano

High‐Performance Industrial‐Grade CsPbBr3 Single Crystal by Solid–Liquid Interface Engineering

Improving photoluminescence, optical and electrical characteristics of PMMA films with gamma irradiation

Contact Info

Product

Resources

About

High‐Performance Industrial‐Grade CsPbBr₃ Single Crystal by Solid–Liquid Interface Engineering