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Updated: Jan 13, 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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Anti-aggregation self-assembled monolayers enable high-performance and scalable perovskite solar cells
Kaihuai Du1, Chunna Huang1, Aili Wang2
1Institute of Technology for Carbon Neutralization, School of Physical Science and Technology, Yangzhou University, Yangzhou, Jiangsu, PR China.
Nature Communications
|January 8, 2026
Summary
This study introduces a surfactant-assisted method to prevent self-assembled monolayer (SAM) aggregation in perovskite solar cells (PSCs). This strategy enhances device performance and stability, achieving high power conversion efficiency (PCE) in PSCs.
Area of Science:
- Materials Science
- Renewable Energy
- Surface Chemistry
Background:
- Self-assembled monolayers (SAMs) like 2-(9H-carbazol-9-yl)) ethylphosphonic acid (2PACz) are vital for reducing energy loss in perovskite solar cells (PSCs).
- Aggregation of SAMs at buried interfaces in PSCs limits device performance.
Purpose of the Study:
- To develop a surfactant-assisted strategy to inhibit 2PACz SAM aggregation.
- To improve the performance and stability of perovskite solar cells through enhanced SAM formation.
Main Methods:
- Functionalization of 2PACz SAMs with cetyltrimethylammonium bromide (CTAB).
- Utilizing CTAB's electrostatic potential for non-bonding interactions with 2PACz.
- Characterization through theoretical and experimental methods to assess SAM dispersion, coverage, and perovskite film properties.
Main Results:
- CTAB functionalization led to uniform dispersion and anchoring of 2PACz, forming SAMs with high surface potential and coverage.
- Perovskite films exhibited enhanced crystallinity, reduced trap state density, and improved hole extraction.
- Achieved a power conversion efficiency (PCE) of 26.20% for small-area PSCs and 22.34% for scaled-up modules.
Conclusions:
- The surfactant-assisted anti-aggregation strategy significantly improves perovskite solar cell performance and scalability.
- Devices demonstrated excellent operational stability, retaining over 80% PCE after 800 hours of maximum power point tracking and 90% after 1000 hours of aging at 65°C.
