Effect of commensurate lithium doping on the scintillation of two-dimensional perovskite crystals
Two-dimensional (2D) hybrid lead bromide perovskites are candidates for high light yield, fast scintillators. In this paper, we discuss the effect of commensurate Lithium (Li)-doping (1 : 1 Li : Pb precursor ratio) on the scintillation properties of two previously reported high light yield 2D-perovs...
| Main Authors: | , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Online Access: | https://hdl.handle.net/10356/160011 |
| _version_ | 1826110716331950080 |
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| author | Maddalena, Francesco Xie, Aozhen Arramel Witkowski, Marcin E. Makowski, Michal Mahler, Benoit Drozdowski, Winicjusz Mariyappan, Thambidurai Springham, Stuart V. Coquet, Philippe Dujardin, Christophe Birowosuto, Muhammad Danang Dang, Cuong |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Maddalena, Francesco Xie, Aozhen Arramel Witkowski, Marcin E. Makowski, Michal Mahler, Benoit Drozdowski, Winicjusz Mariyappan, Thambidurai Springham, Stuart V. Coquet, Philippe Dujardin, Christophe Birowosuto, Muhammad Danang Dang, Cuong |
| author_sort | Maddalena, Francesco |
| collection | NTU |
| description | Two-dimensional (2D) hybrid lead bromide perovskites are candidates for high light yield, fast scintillators. In this paper, we discuss the effect of commensurate Lithium (Li)-doping (1 : 1 Li : Pb precursor ratio) on the scintillation properties of two previously reported high light yield 2D-perovskite crystals, PEA2PbBr4 and BA2PbBr4. The effect of Li, e.g. light yield enhancement, is more prominent in PEA2PbBr4 compared to BA2PbBr4. Both perovskite crystals show a broadening of the radioluminescence spectrum and a slightly longer afterglow, with residual scintillation below 2% after 5 s for both materials. The effects of Li on the negative thermal quenching exhibited by the perovskites are also discussed. Li doping increases the light yield of PEA2PbBr4 by 78% and both perovskite materials show an improvement in their energy resolutions, with a record of 7.7% at 662 keV for the Li-doped PEA2PbBr4. Both perovskite crystals also show very fast gamma-ray excited scintillation decays, with average times of 12.9 ns and 8.0 ns for PEA2PbBr4 and BA2PbBr4, respectively. This work shows that Li doping brings a significant improvement of the perovskite performance, making the perovskites more competitive for fast, high light yield applications in the medical, security or industrial sectors. |
| first_indexed | 2024-10-01T02:38:46Z |
| format | Journal Article |
| id | ntu-10356/160011 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:38:46Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1600112022-07-07T08:24:24Z Effect of commensurate lithium doping on the scintillation of two-dimensional perovskite crystals Maddalena, Francesco Xie, Aozhen Arramel Witkowski, Marcin E. Makowski, Michal Mahler, Benoit Drozdowski, Winicjusz Mariyappan, Thambidurai Springham, Stuart V. Coquet, Philippe Dujardin, Christophe Birowosuto, Muhammad Danang Dang, Cuong School of Electrical and Electronic Engineering CNRS International NTU THALES Research Alliances Research Techno Plaza Science::Physics Light Yield Luminescence Two-dimensional (2D) hybrid lead bromide perovskites are candidates for high light yield, fast scintillators. In this paper, we discuss the effect of commensurate Lithium (Li)-doping (1 : 1 Li : Pb precursor ratio) on the scintillation properties of two previously reported high light yield 2D-perovskite crystals, PEA2PbBr4 and BA2PbBr4. The effect of Li, e.g. light yield enhancement, is more prominent in PEA2PbBr4 compared to BA2PbBr4. Both perovskite crystals show a broadening of the radioluminescence spectrum and a slightly longer afterglow, with residual scintillation below 2% after 5 s for both materials. The effects of Li on the negative thermal quenching exhibited by the perovskites are also discussed. Li doping increases the light yield of PEA2PbBr4 by 78% and both perovskite materials show an improvement in their energy resolutions, with a record of 7.7% at 662 keV for the Li-doped PEA2PbBr4. Both perovskite crystals also show very fast gamma-ray excited scintillation decays, with average times of 12.9 ns and 8.0 ns for PEA2PbBr4 and BA2PbBr4, respectively. This work shows that Li doping brings a significant improvement of the perovskite performance, making the perovskites more competitive for fast, high light yield applications in the medical, security or industrial sectors. Ministry of Education (MOE) The authors acknowledge financial supports from the Singapore Ministry of Education (MOE2019-T1-002-087) and Thales-CINTRA Funding. 2022-07-07T08:24:24Z 2022-07-07T08:24:24Z 2021 Journal Article Maddalena, F., Xie, A., Arramel, Witkowski, M. E., Makowski, M., Mahler, B., Drozdowski, W., Mariyappan, T., Springham, S. V., Coquet, P., Dujardin, C., Birowosuto, M. D. & Dang, C. (2021). Effect of commensurate lithium doping on the scintillation of two-dimensional perovskite crystals. Journal of Materials Chemistry C, 9(7), 2504-2512. https://dx.doi.org/10.1039/D0TC05647B 2050-7526 https://hdl.handle.net/10356/160011 10.1039/D0TC05647B 7 9 2504 2512 en MOE2019-T1-002-087 Journal of Materials Chemistry C © 2021 The Royal Society of Chemistry. All rights reserved. |
| spellingShingle | Science::Physics Light Yield Luminescence Maddalena, Francesco Xie, Aozhen Arramel Witkowski, Marcin E. Makowski, Michal Mahler, Benoit Drozdowski, Winicjusz Mariyappan, Thambidurai Springham, Stuart V. Coquet, Philippe Dujardin, Christophe Birowosuto, Muhammad Danang Dang, Cuong Effect of commensurate lithium doping on the scintillation of two-dimensional perovskite crystals |
| title | Effect of commensurate lithium doping on the scintillation of two-dimensional perovskite crystals |
| title_full | Effect of commensurate lithium doping on the scintillation of two-dimensional perovskite crystals |
| title_fullStr | Effect of commensurate lithium doping on the scintillation of two-dimensional perovskite crystals |
| title_full_unstemmed | Effect of commensurate lithium doping on the scintillation of two-dimensional perovskite crystals |
| title_short | Effect of commensurate lithium doping on the scintillation of two-dimensional perovskite crystals |
| title_sort | effect of commensurate lithium doping on the scintillation of two dimensional perovskite crystals |
| topic | Science::Physics Light Yield Luminescence |
| url | https://hdl.handle.net/10356/160011 |
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