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. 2018 Jan 4;54(4):405-408.
doi: 10.1039/c7cc08947c.

Unique cohesive nature of the β1-isomer of [70]PCBM fullerene on structures and photovoltaic performances of bulk heterojunction films with PffBT4T-2OD polymers

Tomokazu Umeyama  1 , Kensho Igarashi, Daisuke Sakamaki, Shu Seki, Hiroshi Imahori
Affiliations

Unique cohesive nature of the β1-isomer of [70]PCBM fullerene on structures and photovoltaic performances of bulk heterojunction films with PffBT4T-2OD polymers

Tomokazu Umeyama et al. Chem Commun (Camb). .

Abstract

The effects of regioisomer and diastereomer separations of [70]PCBM on structures and photovoltaic properties of PffBT4T-2OD:[70]PCBM blend films have systematically been investigated for the first time. Decreasing the amount of a diastereomer of β-[70]PCBM with high aggregation tendency (β1-[70]PCBM) improved the photovoltaic performances.

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