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Updated: May 3, 2026
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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
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Atomic Real-Space Imaging of the Phase Distribution in Halide Perovskites
Mengmeng Ma1,2, Jiayi Zhang1,2, Xuliang Zhang1,2
1Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, PR China.
Nano Letters
|August 28, 2025
Summary
Disordered characteristics in crystalline materials, like halide perovskites, are revealed using low-dose electron microscopy. This study quantifies phase distribution and its dependence on crystal size, temperature, and interfaces.
Area of Science:
- Materials Science
- Solid-State Physics
- Crystallography
Background:
- Crystalline materials exhibit inherent disorder, influencing their properties.
- Halide perovskites possess ordered and disordered phases due to octahedral rotations.
- Resolving spatial phase distribution requires high-resolution real-space imaging.
Purpose of the Study:
- To investigate the spatial phase distribution in halide perovskites.
- To quantify phase structures by measuring octahedral rotational angles.
- To determine factors influencing phase structure and distribution.
Main Methods:
- Application of low-dose electron microscopy for imaging.
- Atomic-level measurement of octahedral rotational angles.
- Analysis of crystal size, temperature, surface, and interface effects.
Main Results:
- Spatial phase distribution in perovskites was successfully mapped.
- Octahedral rotation angles were quantified to define phase structures.
- Crystal size, temperature, and interfacial structures were identified as key factors influencing phase distribution.
Conclusions:
- Low-dose electron microscopy provides crucial local structural insights into halide perovskite phase distribution.
- Understanding phase distribution is vital for halide perovskite applications.
- The study offers insights into the ordered and disordered nature of crystalline materials in real space.
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