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Updated: Feb 3, 2026
11:38
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
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High-Performance Fused Ring Electron Acceptor-Perovskite Hybrid.
Mingyu Zhang1, Shuixing Dai1, Sreelakshmi Chandrabose2
1Department of Materials Science and Engineering, College of Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education , Peking University , Beijing 100871 , China.
Journal of the American Chemical Society
|October 26, 2018
Summary
Fused ring electron acceptor (FREA)-perovskite hybrids offer a simple method for creating efficient and stable organic-inorganic hybrid solar cells. This approach enhances perovskite film quality and charge transfer, boosting solar cell performance.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Organic-inorganic hybrid solar cells are promising for renewable energy.
- Perovskite materials offer high efficiency but face stability challenges.
- Electron acceptor materials play a crucial role in charge extraction.
Purpose of the Study:
- To investigate the use of fused ring electron acceptor (FREA)-perovskite hybrids in solar cells.
- To improve the efficiency and stability of organic-inorganic hybrid solar cells.
- To understand the role of FREA in perovskite film properties and charge dynamics.
Main Methods:
- Fabrication of FREA-perovskite hybrid films.
- Characterization of film morphology and crystallinity (grain size, crystallinity).
- Photophysical measurements (time-resolved photoluminescence, transient absorption) to study charge dynamics.
- Device performance testing (transient photocurrent and photovoltage) of solar cells.
Main Results:
- FREA-perovskite hybrid films showed larger grain sizes and improved crystallinity compared to pristine perovskite films.
- FREA passivated trap states by coordinating with undercoordinated Pb atoms.
- FREA facilitated efficient electron extraction and collection, leading to faster charge transfer.
- Reduced charge recombination was observed in FREA-based devices.
Conclusions:
- FREA-perovskite hybrid platform enables simple fabrication of high-efficiency, stable organic-inorganic hybrid solar cells.
- The incorporation of FREA enhances perovskite film quality and charge transport properties.
- This approach achieved a champion solar cell efficiency of 21.7%, surpassing control devices (19.6%).
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