Abstract

High-efficiency solution-processed organic solar cells based on narrow-bandgap π-conjugated oligomers are demonstrated by Takuma Yasuda, Chihaya Adachi, and co-workers in article number 1400879. Well-organized donor/acceptor bulk-heterojunction domains with pronounced mesoscopic phase segregation are spontaneously formed in a photoactive binary blend layer. A high power conversion efficiency of 5.9% is achieved for small-molecule organic solar cells.

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