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Scintillation properties of Mn-doped methylammonium lead chloride crystals

Organic–inorganic perovskite materials with a bulk structure MAPbX 3 (MA: methylamine, X: halogen) have attracted much attention in various applications such as solar cells, photodiodes, and radiation detectors. Herein, we synthesized (CH 3 NH 3 )Pb 1- x Mn x Cl 3 (or Mn-doped MAPbCl 3 ) crystals by...

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Published in:Journal of materials science. Materials in electronics 2021-05, Vol.32 (10), p.12903-12910
Main Authors: Kawano, Naoki, Akatsuka, Masaki, Kimura, Hiromi, Nakauchi, Daisuke, Kato, Takumi, Yanagida, Takayuki
Format: Article
Language:English
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Summary:Organic–inorganic perovskite materials with a bulk structure MAPbX 3 (MA: methylamine, X: halogen) have attracted much attention in various applications such as solar cells, photodiodes, and radiation detectors. Herein, we synthesized (CH 3 NH 3 )Pb 1- x Mn x Cl 3 (or Mn-doped MAPbCl 3 ) crystals by inverse temperature crystallization method to develop scintillator materials and evaluated their photoluminescence (PL) and scintillation properties systematically. The Mn-doped MAPbCl 3 crystals showed a sharp emission peak at approximately 410–430 nm with short decay times on the order of nanoseconds and a broad peak at approximately 600 nm with a long decay time on the order of milliseconds in PL and scintillation. Furthermore, pulse height spectra of the Mn-doped MAPbCl 3 crystals with a shaping time of 1 µs were measured, and the obtained scintillation light yields were estimated to be 66 ( x  = 1), 82 ( x  = 5), and 67 ( x  = 10) photons/5.5 MeV-α. Moreover, afterglow levels of the Mn-doped MAPbCl 3 crystals were found to be 161 ( x  = 1), 264 ( x  = 5) and 170 ( x  = 10) ppm, which were comparable to a previously reported afterglow level of Tl-doped CsI.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-020-04480-7