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Related Concept Videos

X-ray Imaging01:24

X-ray Imaging

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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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Updated: Jun 29, 2025

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
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Achieving Low-Dose Rate X-Ray Imaging Based on 2D/3D-Mixed Perovskite Films.

Jingda Zhao1, Xin Wang1, Qi Cheng1

  • 1Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, China.

Small (Weinheim an Der Bergstrasse, Germany)
|March 29, 2024
PubMed
Summary
This summary is machine-generated.

Researchers reduced ion migration in perovskite X-ray detectors by integrating 2D into 3D perovskite. This significantly suppressed baseline drift and lowered the detection limit for improved X-ray imaging applications.

Keywords:
X‐ray detectorsions migrationperovskite thick film

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Area of Science:

  • Materials Science
  • Physics
  • Engineering

Background:

  • X-ray detection and imaging are crucial in various fields, including medical diagnosis and security.
  • Polycrystalline perovskite thick films show promise for direct X-ray imaging due to their properties.
  • Existing perovskite X-ray detectors suffer from baseline drift and high detection limits caused by ion migration.

Purpose of the Study:

  • To mitigate ion migration in perovskite films for enhanced X-ray detection.
  • To improve the stability and sensitivity of perovskite-based X-ray detectors.
  • To reduce the lowest detection limit (LOD) for more effective X-ray imaging.

Main Methods:

  • Incorporation of 2D perovskite into 3D perovskite structures.
  • Engineering perovskite films to increase ion activation energy.
  • Fabrication and testing of mixed-dimension perovskite X-ray detector devices.

Main Results:

  • Ion migration was significantly hindered within the perovskite film.
  • Baseline drift decreased by a factor of 20.
  • The lowest detection limit (LOD) was reduced to 21.1 nGy s⁻¹.
  • A high sensitivity of 5.6 × 10³ µC Gy⁻¹ cm⁻² was maintained.

Conclusions:

  • Integrating 2D perovskite into 3D structures is an effective strategy to reduce ion migration.
  • This approach enhances the performance of perovskite X-ray detectors, addressing key limitations.
  • The findings offer new possibilities for mixed-dimension perovskites in large-scale X-ray detection.