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]

Journal title :

Communications Materials

Publisher :

Nature

Publication date :

2020-12

ISSN :

2662-4443

HAL domain(s) :

Sciences de l'ingénieur [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)₂PbBr₄ 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)₂PbBr₄ 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 ⁶Li enrichment. X-ray imaging pictures with (PEA)₂PbBr₄ are also presented. All results demonstrate the potential of Li-doped (PEA)₂PbBr₄ 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

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL