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Updated: May 1, 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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Perovskite solar cells with atomically coherent interlayers on SnO2 electrodes
Hanul Min1, Do Yoon Lee1, Junu Kim2
1Department of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea.
Nature
|October 21, 2021
Summary
Researchers developed a new interlayer for perovskite solar cells, significantly reducing defects at the interface between the perovskite and electron-transporting layers. This innovation boosts power conversion efficiency and enhances device stability.
Area of Science:
- Materials Science
- Renewable Energy
- Solid-State Physics
Background:
- Perovskite solar cells suffer from high defect concentrations at interfaces with charge-transporting layers, limiting power conversion efficiency.
- Existing surface passivation methods for these interfaces are often ineffective due to material incompatibility.
Purpose of the Study:
- To develop a strategy for minimizing interfacial defects in perovskite solar cells.
- To improve charge extraction and transport by creating a coherent interface between the perovskite and electron-transporting layers.
Main Methods:
- Formation of an atomically coherent interlayer between SnO2 electron-transporting layer and halide perovskite.
- Utilizing Cl-bonded SnO2 and a Cl-containing perovskite precursor for interlayer synthesis.
Main Results:
- Achieved a power conversion efficiency of 25.8% (certified 25.5%) in perovskite solar cells.
- Demonstrated enhanced charge extraction and transport due to the coherent interlayer.
- Unencapsulated devices retained 90% of initial efficiency after 500 hours of light exposure.
Conclusions:
- The formation of a coherent interlayer effectively minimizes interfacial defects in perovskite solar cells.
- This approach offers a promising pathway for designing stable and highly efficient perovskite solar devices.
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