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Nanomaterials
Volume 12
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10.3390/nano12010014
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Article

Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating Wafers

by
Kateřina Děcká
1,2,*,
Jan Král
1,
František Hájek
2,3,
Petr Průša
2,4,
Vladimir Babin
2,
Eva Mihóková
2,3 and
Václav Čuba
1
1
Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague, Czech Republic
2
Institute of Physics of the Czech Academy of Sciences, Cukrovarnická 10, 162 00 Prague, Czech Republic
3
Department of Solid State Engineering, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague, Czech Republic
4
Department of Dosimetry and Application of Ionizing Radiation, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague, Czech Republic
*
Author to whom correspondence should be addressed.
Nanomaterials 2022, 12(1), 14; https://doi.org/10.3390/nano12010014
Submission received: 18 November 2021 / Revised: 15 December 2021 / Accepted: 17 December 2021 / Published: 21 December 2021
(This article belongs to the Special Issue Thin Films Based on Nanocomposites)
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Abstract

Lead halide perovskite nanocrystals of the formula CsPbBr3 have recently been identified as potential time taggers in scintillating heterostructures for time-of-flight positron emission tomography (TOF-PET) imaging thanks to their ultrafast decay kinetics. This study investigates the potential of this material experimentally. We fabricated CsPbBr3 thin films on scintillating GGAG:Ce (Gd2.985Ce0.015Ga2.7Al2.3O12) wafer as a model structure for the future sampling detector geometry. We focused this study on the radioluminescence (RL) response of this composite material. We compare the results of two spin-coating methods, namely the static and the dynamic process, for the thin film preparation. We demonstrated enhanced RL intensity of both CsPbBr3 and GGAG:Ce scintillating constituents of a composite material. This synergic effect arises in both the RL spectra and decays, including decays in the short time window (50 ns). Consequently, this study confirms the applicability of CsPbBr3 nanocrystals as efficient time taggers for ultrafast timing applications, such as TOF-PET.
Keywords: lead halide perovskites; nanocrystals; thin films; heterostructure; scintillator; fast timing; TOF-PET lead halide perovskites; nanocrystals; thin films; heterostructure; scintillator; fast timing; TOF-PET
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MDPI and ACS Style

Děcká, K.; Král, J.; Hájek, F.; Průša, P.; Babin, V.; Mihóková, E.; Čuba, V. Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating Wafers. Nanomaterials 2022, 12, 14. https://doi.org/10.3390/nano12010014

AMA Style

Děcká K, Král J, Hájek F, Průša P, Babin V, Mihóková E, Čuba V. Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating Wafers. Nanomaterials. 2022; 12(1):14. https://doi.org/10.3390/nano12010014

Chicago/Turabian Style

Děcká, Kateřina, Jan Král, František Hájek, Petr Průša, Vladimir Babin, Eva Mihóková, and Václav Čuba. 2022. "Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating Wafers" Nanomaterials 12, no. 1: 14. https://doi.org/10.3390/nano12010014

APA Style

Děcká, K., Král, J., Hájek, F., Průša, P., Babin, V., Mihóková, E., & Čuba, V. (2022). Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating Wafers. Nanomaterials, 12(1), 14. https://doi.org/10.3390/nano12010014

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