Lithium-doped two-dimensional perovskite scintillator for wide-range radiation detection

Aozhen Xie, Chathuranga Hettiarachchi, Francesco Maddalena, Marcin E. Witkowski, Michał Makowski, Winicjusz Drozdowski, Arramel Arramel, Andrew T.S. Wee, Stuart Victor Springham, Phan Quoc Vuong, Hong Joo Kim, Christophe Dujardin, Philippe Coquet, Muhammad Danang Birowosuto, Cuong Dang

Research output: Contribution to journalArticlepeer-review

90 Scopus citations


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.

Original languageEnglish
Article number37
JournalCommunications Materials
Issue number1
StatePublished - Dec 2020


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