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DOI	10.1021/acs.chemmater.0c02789
	Library of Two-Dimensional Hybrid Lead Halide Perovskite Scintillator Crystals
	Xie A.; Maddalena F.; Witkowski M.E.; Makowski M.; Mahler B.; Drozdowski W.; Springham S.V.; Coquet P.; Dujardin C.; Birowosuto M.D.; Dang C.
发表日期	2020
ISSN	8974756
起始页码	8530
结束页码	8539
卷号	32 期号:19
英文摘要	Two-dimensional (2D) hybrid lead halide perovskites are potential candidates for high light yield scintillators as they have small band gaps between 3 and 4 eV and large exciton-binding energy. Here, we discuss the scintillation properties from a total of 11 organic/inorganic hybrid perovskite crystals with two already reported crystals, (PEA)2PbBr4 and (EDBE)PbBr4. Their photoluminescence and X-ray luminescence (XL) spectra are dominated by narrow and broad band emissions, and they correspond to free exciton and self-trapped exciton, respectively. The lifetimes derived from time-resolved XL strongly vary from 0.6 to 17.0 ns. These values make this type of compound among the fastest scintillators. For the light yield derived from the XL, we found that only (PEA)2PbBr4, (EDBE)PbBr4, and (BA)2PbBr4 crystals have light yields between 10,000 and 40,000 photons/MeV. The mechanisms for thermal quenching and afterglow are discussed in order to optimize the light yields. With gamma-ray excitation, we reported the best energy resolution of 7.7% at 662 keV with excellent proportionality. Finally, this study paves the way toward the ultimate high light yield and fast scintillators for medical and homeland security applications. © 2020 American Chemical Society.
scopus关键词	Binding energy; Crystals; Energy gap; Excitons; Gamma rays; Ionization; Lead compounds; Perovskite; Scintillation counters; Semiconductor quantum wells; Exciton-binding energy; Halide perovskites; Homeland security applications; Organic/Inorganic hybrids; Scintillation properties; Scintillator crystals; Self trapped excitons; Two Dimensional (2 D); Light
来源期刊	Chemistry of Materials
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176774
作者单位	School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; CINTRA UMI CNRS/NTU/THALES 3288, Research Techno Plaza, 50 Nanyang Drive, Level 6, Singapore, 637553, Singapore; Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University in Torun, ul. Grudziadzka 5, Torun, 87-100, Poland; Universitè de Lyon, Universitè Claude Bernard, Lyon 1, CNRS, Institut Lumière Matière UMR5306, Villeurbanne, F-69622, France; Natural Sciences and Science Education, National Institute of Education, 1 Nanyang Walk, Singapore, 637616, Singapore; Institute of Electronics Microelectronics and Nanotechnologies (IEMN), CNRS UMR 8520, University of Lille, Villeneuve d'Ascq Cedex, 59650, France
推荐引用方式 GB/T 7714	Xie A.,Maddalena F.,Witkowski M.E.,et al. Library of Two-Dimensional Hybrid Lead Halide Perovskite Scintillator Crystals[J],2020,32(19).
APA	Xie A..,Maddalena F..,Witkowski M.E..,Makowski M..,Mahler B..,...&Dang C..(2020).Library of Two-Dimensional Hybrid Lead Halide Perovskite Scintillator Crystals.Chemistry of Materials,32(19).
MLA	Xie A.,et al."Library of Two-Dimensional Hybrid Lead Halide Perovskite Scintillator Crystals".Chemistry of Materials 32.19(2020).