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Updated: May 15, 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
Chemically coupled dual-interface self-regulation for perovskite solar cells
Yutong Wu1, Bohong Chang1, Xichuang Tong1
1Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan, P. R. China.
Nature Communications
|May 13, 2026
Summary
Trimethyl(cyanomethyl)ammonium iodide improves perovskite solar cell stability and efficiency by self-regulating dual interfaces. This dual-interface engineering enhances device longevity and reduces degradation.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Perovskite solar cells suffer from interface degradation, increasing costs.
- Current interface engineering methods struggle to address multiple interfaces simultaneously.
Purpose of the Study:
- To develop a dual-interface self-regulation strategy for perovskite solar cells.
- To enhance device efficiency and long-term operational stability.
Main Methods:
- Utilized trimethyl(cyanomethyl)ammonium iodide for interface modification.
- Investigated selective desorption of self-assembled molecules and deprotonation of P-OH groups.
- Analyzed the formation of stable P-O-metal species and a 1D n-type capping layer.
Main Results:
- Achieved a power conversion efficiency of 27.05% (certified 26.61%).
- Demonstrated over 95% initial efficiency retention after 2,100 hours of operation at 65°C.
- Reduced potential barriers in the bottom depletion region and enhanced quasi-Fermi level splitting.
Conclusions:
- Dual-interface self-regulation effectively enhances perovskite solar cell performance and stability.
- Trimethyl(cyanomethyl)ammonium iodide offers a promising approach for robust perovskite solar cell development.
