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Updated: Dec 27, 2025
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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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Unveiling the Relationship between the Perovskite Precursor Solution and the Resulting Device Performance
Jincheol Kim1,2, Byung-Wook Park3, Jongho Baek4,5
1Australian Centre for Advanced Photovoltaics (ACAP), School of Photovoltaic and Renewable and Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
Journal of the American Chemical Society
|March 5, 2020
Summary
Controlling colloidal properties in perovskite precursor solutions is key for high-performance perovskite solar cells (PSCs). Engineering these colloids directly impacts film quality, leading to more efficient and reproducible PSC fabrication.
Area of Science:
- Materials Science
- Renewable Energy
- Nanotechnology
Background:
- Solution-processed perovskite solar cells (PSCs) require precise control over precursor solutions for optimal performance and reproducibility.
- Understanding the behavior of colloids (iodoplumbates) within these precursors is crucial for achieving desired film characteristics.
Purpose of the Study:
- To investigate the colloidal properties of perovskite precursor solutions under various conditions.
- To establish a correlation between precursor colloidal characteristics and the resulting perovskite thin film quality.
- To provide guidelines for engineering precursor solutions to enhance PSC efficiency and reproducibility.
Main Methods:
- Characterization of precursor colloids using UV-visible absorption, dynamic light scattering, photoluminescence, and total internal reflection fluorescence microscopy.
- In situ X-ray absorption fine structure studies to examine local colloid structure.
- Analysis of perovskite thin films using transmission electron microscopy, X-ray diffraction, space-charge-limited current, and Kelvin probe force microscopy.
Main Results:
- Colloidal properties of perovskite precursor solutions were found to be directly correlated with defect concentration and crystallinity of the perovskite film.
- Specific colloidal states influence the formation of high-quality perovskite films.
- Demonstrated a link between precursor engineering and film properties.
Conclusions:
- Controlling the colloidal state of perovskite precursors is essential for fabricating efficient and reproducible PSCs.
- Colloid-engineered lead halide perovskite layers can be utilized to improve PSC performance.
- This study offers practical guidelines for optimizing PSC fabrication through precursor solution control.
