Synergy of Organic and Inorganic Sites in 2D Perovskite for Fast Neutron and X-Ray Imaging

Wenyi Shao, Qiang Li, Tengyue He, Yue Zhang, Mengchen Niu, Hongyun Wang, Zhenzhong Zhang*, Yang Zhou, Jian Xin Wang, Ruirui Fan, Xiaochuan Xia, Osman M. Bakr, Omar F. Mohammed*, Hongwei Liang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Fast neutron and X-ray imaging are considered complementary nondestructive detection technologies. However, due to their opposite cross-sections, development of a scintillator that is sensitive to both fast neutrons and X-rays within a single-material framework remains challenging. Herein, an organic–inorganic hybrid perovskite (C4H9NH3)2PbBr4 (BPB) is demonstrated as a scintillator that fully meets the requirements for both fast neutron and X-ray detection. The hydrogen-rich organic component acts as a fast neutron converter and produces detectable recoil protons. The heavy atom-rich inorganic fraction efficiently deposits the energy of charged recoil protons and directly provides a large X-ray cross-section. Due to the synergy of these organic and inorganic components, the BPB scintillator exhibits high light yields (86% of the brightness of a commercial ZnS (Ag)/6LiF scintillator for fast neutrons; 22 000 photons per MeV for X-rays) and fast response times (τdecay = 10.3 ns). More importantly, energy-selective fast neutron and X-ray imaging are also demonstrated, with high resolutions of ≈1 lp mm−1 for fast neutrons and 17.3 lp mm−1 for X-rays; these are among the highest resolution levels for 2D perovskite scintillators. This study highlights the potential of 2D perovskite materials for use in combined fast neutron and X-ray imaging applications.

Original languageEnglish (US)
Article number2301767
JournalAdvanced Functional Materials
Volume33
Issue number40
DOIs
StateAccepted/In press - 2023

Bibliographical note

Funding Information:
This work was supported by the National Natural Science Foundation of China (nos. 12075045, 11675198, 11975257, 11875097, 61774072, and 62074146), the Fundamental Research Funds for the Central Universities (nos. DUT20RC (3) 042, DUT19RC (3) 074, DUT19LK45, and DUT21RC (3) 014), and the Natural Science Foundation of Liaoning Province (2020‐MS‐243). This work was also supported by the King Abdullah University of Science and Technology (KAUST).

Publisher Copyright:
© 2023 Wiley-VCH GmbH.

Keywords

  • 2D perovskites
  • fast neutron imaging
  • scintillator
  • X-ray imaging

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Biomaterials
  • General Materials Science
  • Condensed Matter Physics
  • Electrochemistry

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