All-Inorganic Perovskite Polymer–Ceramics for Flexible and Refreshable X-Ray Imaging

Weiqing Chen, Min Zhou, Yang Liu, Xue Yu, Chaojie Pi, Ze Yang, Hao Zhang, Zhichao Liu, Ting Wang, Jianbei Qiu, Siu Fung Yu, Yang Yang, Xuhui Xu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)

Abstract

Halide perovskites are an emerging scintillator material for X-ray imaging. High-quality X-ray imaging generally requires high spatial resolution and long operation lifetime, especially for targeted objects with irregular shapes. Herein, a perovskite “polymer–ceramics” scintillator, in which the halide perovskite nanocrystals are grown inside a pre-solidified polymer structure with high viscosity (6 × 1012 cP), is designed to construct flexible and refreshable X-ray imaging. A nucleation inhibition strategy is proposed to prevent the agglomeration and Ostwald ripening of perovskite crystals during the subsequent precipitation process, enabling a high-quality polymer–ceramics scintillator with high transparency. This scintillator-based detector achieves a detection limit of 120 nGy s–1 and a spatial resolution of 12.5 lp mm–1. Interestingly, due to the anchoring effect of the exfoliated atoms provided by the polymer matrix, the scintillator film can be refreshed after a long duration (≥3 h) and high dose (8 mGy s–1) irradiation. More importantly, this inherent characteristic overcomes the long operation lifetime issue of perovskites-based scintillators. Hence, the authors’ exploration of the polymer–ceramics scintillator paves the way for the development of flexible and durable perovskite scintillators that can be produced at a low operation cost.

Original languageEnglish
JournalAdvanced Functional Materials
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • cost-effective radiography
  • flexible X-ray imaging
  • perovskite polymer films
  • reproducible X-ray imaging
  • scintillator

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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