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To enable organic solar cells with a competent charge transport efficiency, reducing the thickness of active layer without sacrificing light absorption efficiency turns out to be of high feasibility. Herein, organic solar cells on wrinkled metal surface are designed. The purposely wrinkled Al/Au film with a smooth surface provides a unique scaffold for constructing thin organic photovoltaic devices...
Herein, high-efficient PTB7:PC71BM solar cells with bulk heterojunction being optimized by componential distribution have been realized by solvent treating the active layer with a series of alcohols. Subsequent characterizations including X-ray photoelectron spectroscopy (XPS) and Kelvin probe force microscopy (KPFM) reveal that such treatment adjusts the distribution of PC71BM in the bulk heterojunction...
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