Lead Halide perovskite based plastic scintillators for alpha particle detection

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

doi:10.1016/j.mtcomm.2022.104303

Cited by 2 publications

(3 citation statements)

References 21 publications

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“…In order to optimize the PL and scintillation properties of the composite, we varied the perovskite mass loading in the nanocomposite disc from 1 to 10% with OAM 0.4 NCs. Higher loading of NCs containing high-Z atoms will produce a greater interaction with the incident X-rays and hence a larger detection efficiency. , However, the optical emission yield may be compromised due to greater optical scattering in those composites with higher percentage loading. The optical transmission of the CsPbBr 3 /PMMA composite decreases with an increase in loading concentration due to higher absorbance and scattering, as shown in Figure c.…”

Section: Resultsmentioning

confidence: 99%

“…Higher loading of NCs containing high-Z atoms will produce a greater interaction with the incident X-rays and hence a larger detection efficiency. 51 , 52 However, the optical emission yield may be compromised due to greater optical scattering in those composites with higher percentage loading. The optical transmission of the CsPbBr 3 /PMMA composite decreases with an increase in loading concentration due to higher absorbance and scattering, as shown in Figure 5 c. A sharp decrease in transmission near 530 nm was observed for all the samples, which corresponds to the band edge absorbance of CsPbBr 3 .…”

Section: Resultsmentioning

confidence: 99%

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Surfactant-Dependent Bulk Scale Mechanochemical Synthesis of CsPbBr₃ Nanocrystals for Plastic Scintillator-Based X-ray Imaging

Ghosh

O’Neill

Masteghin

et al. 2023

ACS Appl. Nano Mater.

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We report a facile, solvent-free surfactant-dependent mechanochemical synthesis of highly luminescent CsPbBr 3 nanocrystals (NCs) and study their scintillation properties. A small amount of surfactant oleylamine (OAM) plays an important role in the two-step ball milling method to control the size and emission properties of the NCs. The solid-state synthesized perovskite NCs exhibit a high photoluminescence quantum yield (PLQY) of up to 88% with excellent stability. CsPbBr 3 NCs capped with different amounts of surfactant were dispersed in toluene and mixed with polymethyl methacrylate (PMMA) polymer and cast into scintillator discs. With increasing concentration of OAM during synthesis, the PL yield of CsPbBr 3 /PMMA nanocomposite was increased, which is attributed to reduced NC aggregation and PL quenching. We also varied the perovskite loading concentration in the nanocomposite and studied the resulting emission properties. The most intense PL emission was observed from the 2% perovskite-loaded disc, while the 10% loaded disc exhibited the highest radioluminescence (RL) emission from 50 kV X-rays. The strong RL yield may be attributed to the deep penetration of X-rays into the composite, combined with the large interaction cross-section of the X-rays with the high-Z atoms within the NCs. The nanocomposite disc shows an intense RL emission peak centered at 536 nm and a fast RL decay time of 29.4 ns. Further, we have demonstrated the X-ray imaging performance of a 10% CsPbBr 3 NC-loaded nanocomposite disc.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Surfactant-Dependent Bulk Scale Mechanochemical Synthesis of CsPbBr₃ Nanocrystals for Plastic Scintillator-Based X-ray Imaging

Ghosh

O’Neill

Masteghin

et al. 2023

ACS Appl. Nano Mater.

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“…Utilizing fast and efficient emission of the perovskite QDs, several research groups have reported the development of plastic scintillators loaded with perovskite QDs. [32][33][34][35][36][37] However, owing to the small Stokes shift of the perovskite QDs and consequent self-absorption, the scintillation yield was reduced by the loading. 37) Also, slow decay components appeared by the loading.…”

Section: Introductionmentioning

confidence: 99%

Development of plastic scintillators loaded with perovskite quantum dots and wavelength shifting molecules

Sato,

Fujimoto,

Asai

et al. 2023

Jpn. J. Appl. Phys.

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We have deloveloped plastic scintillators loaded with perovskite quantum dots (QDs) to obtain efficient scintillation and enhanced detection efficiency of high-energy photons such as X-rays and gamma rays. In previous studies, the loading of the perovsite QDs was not successful to achieve efficient scintillation owing to the severe self-absorption of the QD emission, which is caused by small Stokes shift of the QDs. In the present study, we added wavelength shifting molecules to suppress the self-absorption. Among three samples, we have succeeded in enhancement in the scintillation light yield and shortening of the scintillation decay by the suppression of the self-absorption in polustyrene-based plastic scintillators added with butyl-PBD, QD-P450, and Coumarin6, and butyl-PBD, QD-P510, and Nile red. This result indicates that it is necessary to avoid the self-absorption to fully exploit the fast and efficient emission of the perovskite QDs.

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Lead Halide perovskite based plastic scintillators for alpha particle detection

Cited by 2 publications

References 21 publications

Surfactant-Dependent Bulk Scale Mechanochemical Synthesis of CsPbBr₃ Nanocrystals for Plastic Scintillator-Based X-ray Imaging

Surfactant-Dependent Bulk Scale Mechanochemical Synthesis of CsPbBr₃ Nanocrystals for Plastic Scintillator-Based X-ray Imaging

Development of plastic scintillators loaded with perovskite quantum dots and wavelength shifting molecules

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Lead Halide perovskite based plastic scintillators for alpha particle detection

Cited by 2 publications

References 21 publications

Surfactant-Dependent Bulk Scale Mechanochemical Synthesis of CsPbBr3 Nanocrystals for Plastic Scintillator-Based X-ray Imaging

Surfactant-Dependent Bulk Scale Mechanochemical Synthesis of CsPbBr3 Nanocrystals for Plastic Scintillator-Based X-ray Imaging

Development of plastic scintillators loaded with perovskite quantum dots and wavelength shifting molecules

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Product

Resources

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Surfactant-Dependent Bulk Scale Mechanochemical Synthesis of CsPbBr₃ Nanocrystals for Plastic Scintillator-Based X-ray Imaging

Surfactant-Dependent Bulk Scale Mechanochemical Synthesis of CsPbBr₃ Nanocrystals for Plastic Scintillator-Based X-ray Imaging