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Updated: Apr 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
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Interfacial Energetics Reconstruction via Bridging Engineering for Efficient Inverted Perovskite Solar Cells and
1Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), Chongqing University, Chongqing, China.
Angewandte Chemie (International Ed. in English)
|April 14, 2026
Summary
Nitromethyl phenyl sulfone (NMePS) enhances perovskite solar cell performance by optimizing the perovskite/C60 interface. This reduces energy losses, boosting efficiency and stability for scalable solar modules.
Area of Science:
- Materials Science
- Renewable Energy
- Device Physics
Background:
- Perovskite solar cells (PSCs) face performance and stability limitations due to energy losses at the perovskite/C60 interface.
- Suboptimal interfacial contact causes energetic mismatches, restricting charge transport and device longevity.
Purpose of the Study:
- To introduce nitromethyl phenyl sulfone (NMePS) as an interfacial modifier for inverted PSCs.
- To comprehensively optimize interfacial states and minimize energy losses at the perovskite/C60 interface.
Main Methods:
- Utilizing NMePS to bridge the perovskite and C60 layers, reducing trap state density and improving film morphology.
- Employing NMePS to promote uniform dispersion and compact stacking of the C60 electron transport layer (ETL) via π-π interactions.
- Tailoring electronic properties at the interface for favorable energy alignment and optimized charge transport.
Main Results:
- NMePS modification significantly reduced trap state density and improved perovskite film morphology.
- Enhanced C60 ETL dispersion and stacking, leading to suppressed non-radiative recombination.
- Achieved high power conversion efficiencies: 26.87% (small area) and 25.06% (large area).
- Demonstrated exceptional stability: T90 > 2600 h (long-term), T80 > 500 h (thermal), T90 > 1200 h (MPPT).
- A 655.2 cm2 solar module achieved 19.28% efficiency.
Conclusions:
- NMePS effectively reconstructs the perovskite/C60 interface, suppressing recombination and improving device performance.
- The modified interface leads to superior energy alignment and charge dynamics.
- NMePS shows significant potential for up-scaling PSC technology with enhanced efficiency and stability.
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