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Updated: Jan 29, 2026
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Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
Published on: March 19, 2017
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Efficient MA-Free Perovskite Solar Cells Enabled by a Solvent-Engineering-Assisted Low-Dimensional Passivation
Yukai Liu1, Sheng Yang1, Hao Wang1
1International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
ACS Applied Materials & Interfaces
|January 27, 2026
Summary
Solvent engineering optimizes quasi-two-dimensional (Q-2D) perovskite passivation in solar cells, preventing structural damage and boosting efficiency to 24.98%. This enhances perovskite solar cell (PSC) stability and performance.
Area of Science:
- Materials Science
- Photovoltaics
- Nanotechnology
Background:
- Quasi-two-dimensional (Q-2D) perovskites are promising for solar cells.
- Conventional passivation methods can disrupt perovskite structure.
Purpose of the Study:
- To improve perovskite solar cell (PSC) performance and stability.
- To develop a controlled Q-2D passivation strategy.
Main Methods:
- Solvent engineering for surface passivation.
- Utilizing octyl-ammonium iodide (OAI) for Q-2D passivation.
- Creating 2D/3D heterostructures using residual PbI2.
Main Results:
- Achieved a power conversion efficiency of 24.98% in FACs-based PSCs.
- Solvent engineering suppressed destructive infiltration of OA+ ions.
- Q-2D layer provided hydrophobic protection and enhanced charge transport.
Conclusions:
- The hybrid strategy enhances PSC efficiency and long-term stability.
- Q-2D perovskites offer a scalable and durable solution for next-generation photovoltaics.
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