Deterministic light yield, fast scintillation, and microcolumn structures in lead halide perovskite nanocrystals
Lead halide perovskite (LHP) nanocrystals (NCs) have recently attracted attention due to both their high quantum yield and their potential for X-ray imaging applications. In this paper, we investigated the scintillation properties of three different LHP NCs; CsPbBr3, FAPbBr3, and CsPbI3. The feature...
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sg-ntu-dr.10356-1601682022-07-14T02:42:15Z Deterministic light yield, fast scintillation, and microcolumn structures in lead halide perovskite nanocrystals Maddalena, Francesco Xie, Aozhen Chin, Xin Yu Begum, Raihana Witkowski, Marcin E. Makowski, Michal Mahler, Benoit Drozdowski, Winicjusz Springham, Stuart Victor Rawat, Rajdeep Singh Mathews, Nripan Dujardin, Christophe Birowosuto, Muhammad Danang Dang, Cuong School of Electrical and Electronic Engineering CNRS International NTU THALES Research Alliances Energy Research Institute @ NTU (ERI@N) Engineering::Materials Quantum Dots Emission Lead halide perovskite (LHP) nanocrystals (NCs) have recently attracted attention due to both their high quantum yield and their potential for X-ray imaging applications. In this paper, we investigated the scintillation properties of three different LHP NCs; CsPbBr3, FAPbBr3, and CsPbI3. The featured NCs exhibited high X-ray excited luminescence (XL) at cryogenic temperatures. While FAPbBr3and CsPbI3NCs display thermal quenching, CsPbBr3NCs show negative thermal quenching and high XL at high temperatures, with a light yield of 24,000 ± 2,100 photons/MeV at 300 K. The LHP NCs exhibit a small afterglow and low trap density and exhibit a very fast XL decay time, under 20 ns, faster than those of some currently used commercial scintillators. Overall, CsPbBr3NCs are the best performing materials investigated here, making them particularly attractive for fast-timing applications such as positron emission tomography or particle detectors in high-energy physics. In the end, we demonstrate the proof of concept for using a CsPbBr3NC matrix for imaging applications and the flexibility of NCs for developing microstructure scintillators. Ministry of Education (MOE) The authors acknowledge financial support from the Singapore Ministry of Education (MOE2019-T1-002-087) and Thales-CINTRA Funding. 2022-07-14T02:42:14Z 2022-07-14T02:42:14Z 2021 Journal Article Maddalena, F., Xie, A., Chin, X. Y., Begum, R., Witkowski, M. E., Makowski, M., Mahler, B., Drozdowski, W., Springham, S. V., Rawat, R. S., Mathews, N., Dujardin, C., Birowosuto, M. D. & Dang, C. (2021). Deterministic light yield, fast scintillation, and microcolumn structures in lead halide perovskite nanocrystals. Journal of Physical Chemistry C, 125(25), 14082-14088. https://dx.doi.org/10.1021/acs.jpcc.1c03392 1932-7447 https://hdl.handle.net/10356/160168 10.1021/acs.jpcc.1c03392 2-s2.0-85110504940 25 125 14082 14088 en MOE2019-T1-002-087 Journal of Physical Chemistry C © 2021 American Chemical Society. All rights reserved. |
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Engineering::Materials Quantum Dots Emission Maddalena, Francesco Xie, Aozhen Chin, Xin Yu Begum, Raihana Witkowski, Marcin E. Makowski, Michal Mahler, Benoit Drozdowski, Winicjusz Springham, Stuart Victor Rawat, Rajdeep Singh Mathews, Nripan Dujardin, Christophe Birowosuto, Muhammad Danang Dang, Cuong Deterministic light yield, fast scintillation, and microcolumn structures in lead halide perovskite nanocrystals |
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Lead halide perovskite (LHP) nanocrystals (NCs) have recently attracted attention due to both their high quantum yield and their potential for X-ray imaging applications. In this paper, we investigated the scintillation properties of three different LHP NCs; CsPbBr3, FAPbBr3, and CsPbI3. The featured NCs exhibited high X-ray excited luminescence (XL) at cryogenic temperatures. While FAPbBr3and CsPbI3NCs display thermal quenching, CsPbBr3NCs show negative thermal quenching and high XL at high temperatures, with a light yield of 24,000 ± 2,100 photons/MeV at 300 K. The LHP NCs exhibit a small afterglow and low trap density and exhibit a very fast XL decay time, under 20 ns, faster than those of some currently used commercial scintillators. Overall, CsPbBr3NCs are the best performing materials investigated here, making them particularly attractive for fast-timing applications such as positron emission tomography or particle detectors in high-energy physics. In the end, we demonstrate the proof of concept for using a CsPbBr3NC matrix for imaging applications and the flexibility of NCs for developing microstructure scintillators. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Maddalena, Francesco Xie, Aozhen Chin, Xin Yu Begum, Raihana Witkowski, Marcin E. Makowski, Michal Mahler, Benoit Drozdowski, Winicjusz Springham, Stuart Victor Rawat, Rajdeep Singh Mathews, Nripan Dujardin, Christophe Birowosuto, Muhammad Danang Dang, Cuong |
format |
Article |
author |
Maddalena, Francesco Xie, Aozhen Chin, Xin Yu Begum, Raihana Witkowski, Marcin E. Makowski, Michal Mahler, Benoit Drozdowski, Winicjusz Springham, Stuart Victor Rawat, Rajdeep Singh Mathews, Nripan Dujardin, Christophe Birowosuto, Muhammad Danang Dang, Cuong |
author_sort |
Maddalena, Francesco |
title |
Deterministic light yield, fast scintillation, and microcolumn structures in lead halide perovskite nanocrystals |
title_short |
Deterministic light yield, fast scintillation, and microcolumn structures in lead halide perovskite nanocrystals |
title_full |
Deterministic light yield, fast scintillation, and microcolumn structures in lead halide perovskite nanocrystals |
title_fullStr |
Deterministic light yield, fast scintillation, and microcolumn structures in lead halide perovskite nanocrystals |
title_full_unstemmed |
Deterministic light yield, fast scintillation, and microcolumn structures in lead halide perovskite nanocrystals |
title_sort |
deterministic light yield, fast scintillation, and microcolumn structures in lead halide perovskite nanocrystals |
publishDate |
2022 |
url |
https://hdl.handle.net/10356/160168 |
_version_ |
1738844913779343360 |