Lithium-doped two-dimensional perovskite ...
Document type :
Article dans une revue scientifique
Title :
Lithium-doped two-dimensional perovskite scintillator for wide-range radiation detection
Author(s) :
Xie, Aozhen [Auteur]
Nanyang Technological University [Singapour]
CNRS International - NTU - Thales Research Alliance [CINTRA]
Hettiarachchi, Chathuranga [Auteur]
Nanyang Technological University [Singapour]
Maddalena, Francesco [Auteur]
CNRS International - NTU - Thales Research Alliance [CINTRA]
Witkowski, Marcin [Auteur]
Makowski, Michal [Auteur]
Drozdowski, Winicjusz [Auteur]
Arramel, Arramel [Auteur]
Department of Physics (Singapore)
Wee, Andrew [Auteur]
Department of Physics (Singapore)
Springham, Stuart Victor [Auteur]
Vuong, Phan Quoc [Auteur]
Kyungpook National University [Daegu] [KNU]
Kim, Hong Joo [Auteur]
Kyungpook National University [Daegu] [KNU]
Dujardin, Christophe [Auteur]
Luminescence [LUMINESCENCE]
Coquet, Philippe [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Nanyang Technological University [Singapour]
CNRS International - NTU - Thales Research Alliance [CINTRA]
Birowosuto, Muhammad Danang [Auteur]
Nanyang Technological University [Singapour]
CNRS International - NTU - Thales Research Alliance [CINTRA]
Dang, Cuong [Auteur]
Nanyang Technological University [Singapour]
CNRS International - NTU - Thales Research Alliance [CINTRA]
Nanyang Technological University [Singapour]
CNRS International - NTU - Thales Research Alliance [CINTRA]
Hettiarachchi, Chathuranga [Auteur]
Nanyang Technological University [Singapour]
Maddalena, Francesco [Auteur]
CNRS International - NTU - Thales Research Alliance [CINTRA]
Witkowski, Marcin [Auteur]
Makowski, Michal [Auteur]
Drozdowski, Winicjusz [Auteur]
Arramel, Arramel [Auteur]
Department of Physics (Singapore)
Wee, Andrew [Auteur]
Department of Physics (Singapore)
Springham, Stuart Victor [Auteur]
Vuong, Phan Quoc [Auteur]
Kyungpook National University [Daegu] [KNU]
Kim, Hong Joo [Auteur]
Kyungpook National University [Daegu] [KNU]
Dujardin, Christophe [Auteur]

Luminescence [LUMINESCENCE]
Coquet, Philippe [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Nanyang Technological University [Singapour]
CNRS International - NTU - Thales Research Alliance [CINTRA]
Birowosuto, Muhammad Danang [Auteur]
Nanyang Technological University [Singapour]
CNRS International - NTU - Thales Research Alliance [CINTRA]
Dang, Cuong [Auteur]
Nanyang Technological University [Singapour]
CNRS International - NTU - Thales Research Alliance [CINTRA]
Journal title :
Communications Materials
Publisher :
Nature
Publication date :
2020-12
ISSN :
2662-4443
HAL domain(s) :
Sciences de l'ingénieur [physics]
Chimie
Physique [physics]
Chimie
Physique [physics]
English abstract : [en]
Two-dimensional lead halide perovskites have demonstrated their potential as high-performance scintillators for X- and gamma-ray detection, while also being low-cost. Here we adopt lithium chemical doping in two-dimensional ...
Show more >Two-dimensional lead halide perovskites have demonstrated their potential as high-performance scintillators for X- and gamma-ray detection, while also being low-cost. Here we adopt lithium chemical doping in two-dimensional phenethylammonium lead bromide (PEA)<sub>2</sub>PbBr<sub>4</sub> perovskite crystals to improve the properties and add functionalities with other radiation detections. Li doping is confirmed by X-ray photoemission spectroscopy and the scintillation mechanisms are explored via temperature dependent X-ray and thermoluminescence measurements. Our 1:1 Li-doped (PEA)<sub>2</sub>PbBr<sub>4</sub> demonstrates a fast decay time of 11 ns (80%), a clear photopeak with an energy resolution of 12.4%, and a scintillation yield of 11,000 photons per MeV under 662 keV gamma-ray radiation. Additionally, our Li-doped crystal shows a clear alpha particle/gamma-ray discrimination and promising thermal neutron detection through <sup>6</sup>Li enrichment. X-ray imaging pictures with (PEA)<sub>2</sub>PbBr<sub>4</sub> are also presented. All results demonstrate the potential of Li-doped (PEA)<sub>2</sub>PbBr<sub>4</sub> as a versatile scintillator covering a wide radiation energy range for various applications.Show less >
Show more >Two-dimensional lead halide perovskites have demonstrated their potential as high-performance scintillators for X- and gamma-ray detection, while also being low-cost. Here we adopt lithium chemical doping in two-dimensional phenethylammonium lead bromide (PEA)<sub>2</sub>PbBr<sub>4</sub> perovskite crystals to improve the properties and add functionalities with other radiation detections. Li doping is confirmed by X-ray photoemission spectroscopy and the scintillation mechanisms are explored via temperature dependent X-ray and thermoluminescence measurements. Our 1:1 Li-doped (PEA)<sub>2</sub>PbBr<sub>4</sub> demonstrates a fast decay time of 11 ns (80%), a clear photopeak with an energy resolution of 12.4%, and a scintillation yield of 11,000 photons per MeV under 662 keV gamma-ray radiation. Additionally, our Li-doped crystal shows a clear alpha particle/gamma-ray discrimination and promising thermal neutron detection through <sup>6</sup>Li enrichment. X-ray imaging pictures with (PEA)<sub>2</sub>PbBr<sub>4</sub> are also presented. All results demonstrate the potential of Li-doped (PEA)<sub>2</sub>PbBr<sub>4</sub> as a versatile scintillator covering a wide radiation energy range for various applications.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Source :
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