TY - JOUR
T1 - Lithium-doped two-dimensional perovskite scintillator for wide-range radiation detection
AU - Xie, Aozhen
AU - Hettiarachchi, Chathuranga
AU - Maddalena, Francesco
AU - Witkowski, Marcin E.
AU - Makowski, Michał
AU - Drozdowski, Winicjusz
AU - Arramel, Arramel
AU - Wee, Andrew T.S.
AU - Springham, Stuart Victor
AU - Vuong, Phan Quoc
AU - Kim, Hong Joo
AU - Dujardin, Christophe
AU - Coquet, Philippe
AU - Birowosuto, Muhammad Danang
AU - Dang, Cuong
N1 - Publisher Copyright:
© 2020, The Author(s).
PY - 2020/12
Y1 - 2020/12
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/85126167144
U2 - 10.1038/s43246-020-0038-x
DO - 10.1038/s43246-020-0038-x
M3 - Article
AN - SCOPUS:85126167144
SN - 2662-4443
VL - 1
JO - Communications Materials
JF - Communications Materials
IS - 1
M1 - 37
ER -