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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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Scalable solution soaking quenching technique unlocks efficient and durable wide bandgap perovskite solar modules
Yuxuan Fang1, Jinglin Sun2, Ying Tan1
1Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, PR China.
Nature Communications
|February 16, 2026
Summary
A new solution-soaking quenching technique improves wide-bandgap perovskite solar cells by enhancing uniformity and stability. This method boosts efficiency for large-area modules, enabling practical applications like portable chargers and tandem systems.
Area of Science:
- Materials Science
- Photovoltaics
- Chemical Engineering
Background:
- Wide-bandgap mixed-halide perovskite solar cells offer potential for diverse applications but face challenges in large-area fabrication.
- Issues like crystallization heterogeneity, surface defects, and halide segregation hinder scalability.
- Current spin-coating passivation methods lack uniformity at industrial scales.
Purpose of the Study:
- To introduce an industrially viable solution-soaking quenching technique for large-area perovskite film fabrication.
- To address limitations in uniform interfacial control, surface defects, and halide stability in wide-bandgap perovskites.
- To enhance the efficiency and operational stability of perovskite photovoltaic modules.
Main Methods:
- Hot blade-coating of wide-bandgap perovskite films (~30 cm2) followed by immersion in cold SrI2/isopropanol solution.
- Utilizing the solution-soaking quenching technique for rapid surface reconstruction and passivation.
- Characterization of film properties including photoluminescence, crystallinity, roughness, and halide stability.
Main Results:
- Achieved rapid surface reconstruction, uniform passivation, enhanced photoluminescence, improved crystallinity, and reduced roughness.
- Demonstrated stabilization of halides through gradient Sr2+ incorporation, mitigating tensile stress.
- Attained high efficiencies: 22.03% for small-area devices (0.04 cm2) and 20.32% for a large-area module (10.13 cm2).
- Showcased versatility across perovskite compositions and potential for semitransparent modules (18.41% bifacial efficiency) and tandem applications (>27% efficiency).
Conclusions:
- The solution-soaking quenching technique is a scalable and effective method for producing high-performance wide-bandgap perovskite photovoltaic modules.
- This approach overcomes key challenges in large-area processing, paving the way for practical applications.
- The technique enables enhanced device efficiency, stability, and versatility, broadening the scope of perovskite solar technology.
