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Adv Mater. 2013 Nov 20;25(43):6266-9. doi: 10.1002/adma.201302607. Epub 2013 Aug 29.

Addition of dihydromethano group to fullerenes to improve the performance of bulk heterojunction organic solar cells.

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  • 1Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.

Abstract

Adding a compact dihydromethano (CH2 ) group to a 58π-indene fullerene (C60 (Ind)) creates a 56π-electron dihydromethano/indene fullerene (C60 (CH2 )(Ind)) and raises the LUMO level with only a minimal increase in size. This class of compounds features reduced conjugation that raises the LUMO level, and a high electron mobility because of the small CH2 addend.

© 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

KEYWORDS:

bulk heterojunction; electron transport; fullerene; photovoltaics; solar cells

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