Hybridisation of perovskite nanocrystals with organic molecules for highly efficient liquid scintillators

Sangeun Cho; Sungwoo Kim; Jongmin Kim; Yongcheol Jo; Ilhwan Ryu; Seongsu Hong; Jae-Joon Lee; SeungNam Cha; Eun Bi Nam; Sang Uck Lee; Sam Kyu Noh; Hyungsang Kim; Jungwon Kwak; Hyunsik Im

doi:10.1038/s41377-020-00391-8

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Hybridisation of perovskite nanocrystals with organic molecules for highly efficient liquid scintillators

Original Articles

- Hybridisation of perovskite nanocrystals with organic molecules for highly efficient liquid scintillators
- Light: Science & Applications Vol. 9, Issue 5, Pages: 1489-1497(2020)
- Affiliations：
  
  1.Division of Physics and Semiconductor Science, Dongguk University, Seoul 04620, Republic of Korea
  2.Department of Radiation Oncology, Asan Medical Center, Seoul 05505, Republic of Korea
  3.Department of Energy and Materials Engineering, Dongguk University, Seoul 04620, Republic of Korea
  4.Department of Physics, Sungkyunkwan University, Suwon 2066, Republic of Korea
  5.Department of Bionano Technology and Department of Applied Chemistry, Hanyang University, Ansan 15588, Republic of Korea
- Author bio：
  
  Hyungsang Kim (hskim@dongguk.edu)
  Jungwon Kwak (jwkwak0301@gmail.com)
  Hyunsik Im (hyunsik7@dongguk.edu)
- Funds：
- DOI：10.1038/s41377-020-00391-8
  CLC：
- Published：2020，
  
  Published Online：07 September 2020，
  
  Received：18 April 2020，
  
  Revised：18 August 2020，
  
  Accepted：20 August 2020
- Accepted：
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Cho, S. et al. Hybridisation of perovskite nanocrystals with organic molecules for highly efficient liquid scintillators. Light: Science & Applications, 9, 1489-1497 (2020).
DOI：

Cho, S. et al. Hybridisation of perovskite nanocrystals with organic molecules for highly efficient liquid scintillators. Light: Science & Applications, 9, 1489-1497 (2020). DOI： 10.1038/s41377-020-00391-8.

摘要

Abstract

Compared with solid scintillators

liquid scintillators have limited capability in dosimetry and radiography due to their relatively low light yields. Here

we report a new generation of highly efficient and low-cost liquid scintillators constructed by surface hybridisation of colloidal metal halide perovskite CsPbA

(A: Cl

I) nanocrystals (NCs) with organic m

olecules (2

5-diphenyloxazole). The hybrid liquid scintillators

compared to state-of-the-art CsI and Gd

demonstrate markedly highly competitive radioluminescence quantum yields under X-ray irradiation typically employed in diagnosis and treatment. Experimental and theoretical analyses suggest that the enhanced quantum yield is associated with X-ray photon-induced charge transfer from the organic molecules to the NCs. High-resolution X-ray imaging is demonstrated using a hybrid CsPbBr

NC-based liquid scintillator. The novel X-ray scintillation mechanism in our hybrid scintillators could be extended to enhance the quantum yield of various types of scintillators

enabling low-dose radiation detection in various fields

including fundamental science and imaging.

关键词

Keywords

references

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