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Efficient Organic Solar Cells with Non-Fullerene Acceptors
Shuixing Li1, Wenqing Liu1, Chang-Zhi Li1
1State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
Fullerene-free organic solar cells (OSCs) using non-fullerene acceptors now exceed 12% efficiency. This review highlights advances in non-fullerene acceptors, crucial for practical, high-performance OSCs.
Area of Science:
- Materials Science
- Organic Electronics
- Photovoltaics
Background:
- Organic solar cells (OSCs) traditionally used fullerene derivatives as electron acceptors.
- Emerging non-fullerene acceptors (NFAs) offer tunable properties, overcoming fullerene limitations.
Purpose of the Study:
- To summarize recent advancements in high-efficiency non-fullerene acceptors for OSCs.
- To correlate material properties with photovoltaic performance in NFAs.
Main Methods:
- Review of recent literature on non-fullerene acceptor development.
- Analysis of structure-property relationships for NFAs.
Main Results:
- Non-fullerene OSCs achieve power conversion efficiencies over 12%.
- NFAs demonstrate excellent optoelectronic and morphological tunability.
- Key factors influencing performance include absorption, energy loss, and morphology.
Conclusions:
- NFAs hold significant promise for developing practical and high-performance organic solar cells.
- Continued research into NFA design is crucial for advancing OSC technology.
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