Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating Wafers
Lead halide perovskite nanocrystals of the formula CsPbBr<sub>3</sub> 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 investiga...
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| Format: | Article |
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MDPI AG
2021-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/1/14 |
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| author | Kateřina Děcká Jan Král František Hájek Petr Průša Vladimir Babin Eva Mihóková Václav Čuba |
| author_facet | Kateřina Děcká Jan Král František Hájek Petr Průša Vladimir Babin Eva Mihóková Václav Čuba |
| author_sort | Kateřina Děcká |
| collection | DOAJ |
| description | Lead halide perovskite nanocrystals of the formula CsPbBr<sub>3</sub> 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 CsPbBr<sub>3</sub> thin films on scintillating GGAG:Ce (Gd<sub>2.985</sub>Ce<sub>0.015</sub>Ga<sub>2.7</sub>Al<sub>2.3</sub>O<sub>12</sub>) 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 CsPbBr<sub>3</sub> 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 CsPbBr<sub>3</sub> nanocrystals as efficient time taggers for ultrafast timing applications, such as TOF-PET. |
| first_indexed | 2024-03-10T03:29:11Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T03:29:11Z |
| publishDate | 2021-12-01 |
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| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-a832da833bd941dc8132bbf46fbe8a5b2023-11-23T12:00:15ZengMDPI AGNanomaterials2079-49912021-12-011211410.3390/nano12010014Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating WafersKateřina Děcká0Jan Král1František Hájek2Petr Průša3Vladimir Babin4Eva Mihóková5Václav Čuba6Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague, Czech RepublicDepartment of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague, Czech RepublicInstitute of Physics of the Czech Academy of Sciences, Cukrovarnická 10, 162 00 Prague, Czech RepublicInstitute of Physics of the Czech Academy of Sciences, Cukrovarnická 10, 162 00 Prague, Czech RepublicInstitute of Physics of the Czech Academy of Sciences, Cukrovarnická 10, 162 00 Prague, Czech RepublicInstitute of Physics of the Czech Academy of Sciences, Cukrovarnická 10, 162 00 Prague, Czech RepublicDepartment of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague, Czech RepublicLead halide perovskite nanocrystals of the formula CsPbBr<sub>3</sub> 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 CsPbBr<sub>3</sub> thin films on scintillating GGAG:Ce (Gd<sub>2.985</sub>Ce<sub>0.015</sub>Ga<sub>2.7</sub>Al<sub>2.3</sub>O<sub>12</sub>) 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 CsPbBr<sub>3</sub> 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 CsPbBr<sub>3</sub> nanocrystals as efficient time taggers for ultrafast timing applications, such as TOF-PET.https://www.mdpi.com/2079-4991/12/1/14lead halide perovskitesnanocrystalsthin filmsheterostructurescintillatorfast timing |
| spellingShingle | Kateřina Děcká Jan Král František Hájek Petr Průša Vladimir Babin Eva Mihóková Václav Čuba Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating Wafers Nanomaterials lead halide perovskites nanocrystals thin films heterostructure scintillator fast timing |
| title | Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating Wafers |
| title_full | Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating Wafers |
| title_fullStr | Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating Wafers |
| title_full_unstemmed | Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating Wafers |
| title_short | Scintillation Response Enhancement in Nanocrystalline Lead Halide Perovskite Thin Films on Scintillating Wafers |
| title_sort | scintillation response enhancement in nanocrystalline lead halide perovskite thin films on scintillating wafers |
| topic | lead halide perovskites nanocrystals thin films heterostructure scintillator fast timing |
| url | https://www.mdpi.com/2079-4991/12/1/14 |
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