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Gabriel Bernardo et al.
Summary: Organic photovoltaic (OPV) cells have significantly increased their power conversion efficiency under AM1.5G conditions, and there is a growing interest in their applications for dim light indoor settings. However, transferring OPV from lab to market still faces challenges, such as scaling up single cells, finding alternatives to vacuum processing and ITO substrates, and improving the lifetime of large area OPV devices.
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Zeng Chen et al.
Summary: Nonfullerene acceptor organic solar cells with power conversion efficiency up to 18% show the formation of NFA triplet exciton as a main non-radiative recombination and energy loss channel. Side-chain fluorination in high-efficiency NFA OSCs efficiently inhibits charge recombination to NFA triplet excitons, leading to higher V-OC and PCE. This paves the way for OSCs with lower V-OC loss and efficiency exceeding 20%.
Article
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Yong Cui et al.
Summary: By combining material design and ternary blending strategy, a maximum power conversion efficiency of 19.0% is achieved in single-junction OPV cells. Optimized active layer structure significantly improves the photovoltaic parameters, enhancing the performance and PCE values of the cells.
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Yongxi Li et al.
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Shuixing Li et al.
Summary: The study conducted on four non-fullerene acceptors reveals how extended conjugation, asymmetric terminals, and alkyl chain length can affect device performance. Understanding correlations between molecular structures and macroscopic properties is critical in realizing highly efficient organic photovoltaics.
NATURE COMMUNICATIONS
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Editorial Material
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Flurin Eisner et al.
Summary: The use of non-fullerene acceptors has enhanced the performance of organic solar cells, but the electrostatic environment at the interface may impose limitations on further improvements.
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Yanfeng Liu et al.
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Chaohua Cui et al.
Summary: Organic solar cells have unique advantages of light weight and low cost, with the morphology of the active layer being crucial for performance. Postdeposition treatments and additive treatments are effective in optimizing the morphology, leading to improved performance in organic photovoltaic applications.
Review
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