Scintillation properties of quantum-dot doped styrene based plastic scintillators

Park, J.M.; Kim, H.J.; Hwang, Yong Seok; Kim, D.H.; Park, H.W.

doi:10.1016/j.jlumin.2013.09.051

Cited by 36 publications

(10 citation statements)

References 11 publications

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“…J.M. Park et al prepared a series of these scintillators based on styrene and PPO and quantum-dots with a core of CdSe and shell (ZnS) [18]. In Fig.…”

Section: α and β Attenuationmentioning

confidence: 99%

Scintillation for the future in a changing world

Garcı́a¹

2022

J Radioanal Nucl Chem

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Liquid Scintillation has two main characteristics: the lack of resolution and the capability to determine alpha and beta emitters. Society evolves toward a situation where information is key for management and where sustainability is also of paramount importance for the future of the planet. In this scenario, this article suggests to continue implementing the use of Plastic/Extractive Scintillating resins and to rescue some capabilities of the scintillation to design specific and miniaturize detectors that include alpha/beta discrimination based on particle attenuation or scintillators emission wavelength. These approaches will complement laboratory analysis and are aligned with the demands of the society.

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“…J.M. Park et al prepared a series of these scintillators based on styrene and PPO and quantum-dots with a core of CdSe and shell (ZnS) [18]. In Fig.…”

Section: α and β Attenuationmentioning

confidence: 99%

Scintillation for the future in a changing world

Garcı́a¹

2022

J Radioanal Nucl Chem

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“…In 2014, Park J.M. et al [100] assessed the properties of scintillators after adding CdSe/ZnS QDs to plastic-based materials. A plastic scintillator containing quantum dots was created via a thermal polymerization method as described above and was prepared with the contents shown in Table 8.…”

Section: Doctor Bladementioning

confidence: 99%

“…The decay times of standard plastic scintillators (Styrene, PPO, POPOP) are 4.4 ns and 16 ns, and those of corresponding QD (0.05 wt%) doped plastic scintillators were measured and found to be 2.40 ns and 11.4 ns. The results of this study are considered to be applicable to the effort to establish a method for the manufacturing of plastic scintillators including quantum dots [99,100]. In 2019, Brus V.V.…”

Section: Doctor Bladementioning

confidence: 99%

A Review of Nanomaterial Based Scintillators

et al. 2021

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Recently, nanomaterial-based scintillators are newly emerging technologies for many research fields, including medical imaging, nuclear security, nuclear decommissioning, and astronomical applications, among others. To date, scintillators have played pivotal roles in the development of modern science and technology. Among them, plastic scintillators have a low atomic number and are mainly used for beta-ray measurements owing to their low density, but these types of scintillators can be manufactured not in large sizes but also in various forms with distinct properties and characteristics. However, the plastic scintillator is mainly composed of C, H, O and N, implying that the probability of a photoelectric effect is low. In a gamma-ray nuclide analysis, they are used for time-related measurements given their short luminescence decay times. Generally, inorganic scintillators have relatively good scintillation efficiency rates and resolutions. And there are thus widely used in gamma-ray spectroscopy. Therefore, developing a plastic scintillator with performance capabilities similar to those of an inorganic scintillator would mean that it could be used for detection and monitoring at radiological sites. Many studies have reported improved performance outcomes of plastic scintillators based on nanomaterials, exhibiting high-performance plastic scintillators or flexible film scintillators using graphene, perovskite, and 2D materials. Furthermore, numerous fabrication methods that improve the performance through the doping of nanomaterials on the surface have been introduced. Herein, we provide an in-depth review of the findings pertaining to nanomaterial-based scintillators to gain a better understanding of radiological detection technological applications.

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“…Other growing research fields involving QDs are those related with scintillation and dosimetry. − In these applications, the optical properties of QDs are exploited for either ionizing radiation detection via scintillation − , or postirradiation dose measurements by the optical characterization of irradiated samples. − In both contexts, colloidal QDs offer an easier processability in comparison with self-assembled QDs, considering that the embedment of nanocrystals into desired mediums is performed by their proper surface functionalization with molecular ligands of different chemistry, without affecting the QD internal composition and crystal structure . This also represents a considerable strength of colloidal QDs in comparison with organic fluorophores, for which their embedment in certain matrices cannot be easily achieved unless the molecule is redesigned or modifiers are introduced during the embedment process .…”

Section: Introductionmentioning

confidence: 99%

“…In scintillation applications, the optical properties of colloidal QDs are investigated in real-time under ionizing radiation. − For example, Létant and Wang , studied the scintillation properties of porous glass doped with colloidal CdSe/ZnS QDs under α and γ irradiation. Despite the long integration time (72 h) and the low optical yield for γ-ray irradiation, the scintillation spectrum was characterized by an energy resolution at 59 keV of 15%, twice higher than an NaI-based scintillator. , In another work, Lecavalier et al investigated the scintillating output of multilayered colloidal CdSe/CdS/CdZnS/ZnS QDs dispersed in water and irradiated by γ-rays.…”

Section: Introductionmentioning

confidence: 99%

Proton Irradiation Effects on Colloidal InGaP/ZnS Core–Shell Quantum Dots Embedded in Polydimethylsiloxane: Discriminating Core from Shell Radiation-Induced Defects through Time-Resolved Photoluminescence Analysis

et al. 2018

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In scintillation and dosimetry applications, the increasing interest on the use of colloidal quantum dots (QDs) in comparison with organic fluorophores is mainly due to their easier chemical processability, narrower photoluminescence (PL) emission, and higher cross-section for ionizing radiation. The development of scintillators and dosimeter based on QDs, however, relies on a deep understanding of the effects of ionizing radiation on QD structures. In this paper, we present the optical characterization of colloidal cadmium-free InGaP/ZnS core−shell QDs embedded in polydimethylsiloxane (PDMS) and irradiated with 2 MeV protons (H + ) in the fluence range of 10 14 to 10 15 H + cm −2 . Steady-state PL measurements of the irradiated samples show a decrease of the average QD PL intensity, indicating the introduction of PL quenching centers. Time-resolved PL measurements, acquired with a time-correlated single photon counting system, provide a way to probe the radiation-induced change in the carrier recombination dynamics of the QDs. A detailed analysis of the time-resolved PL curves demonstrates the presence of PL quenching defects localized both at the inner (core) and at the outer (shell) structure of the nanocrystal. The radiation-induced change in the QD optical properties, coupled with a suitable radiation hardness of the PDMS in these irradiation conditions, open the way for possible future applications related to dosimetry systems based on QDs as nanostructured sensing elements.

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Scintillation properties of quantum-dot doped styrene based plastic scintillators

Cited by 36 publications

References 11 publications

Scintillation for the future in a changing world

Scintillation for the future in a changing world

A Review of Nanomaterial Based Scintillators

Proton Irradiation Effects on Colloidal InGaP/ZnS Core–Shell Quantum Dots Embedded in Polydimethylsiloxane: Discriminating Core from Shell Radiation-Induced Defects through Time-Resolved Photoluminescence Analysis

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