Non-fullerene acceptors (NFAs) are a class of organic materials used in photovoltaic cells to accept electrons from the donor material, facilitating the conversion of solar energy into electrical energy. Unlike traditional fullerene-based acceptors, NFAs offer a variety of chemical structures and properties, which can be tailored to enhance the efficiency of charge separation and transport in donor-acceptor systems. This flexibility allows for improved performance and stability in organic photovoltaic devices.
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