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Addition of Dihydromethano Group to Fullerenes to Improve the Performance of Bulk Heterojunction Organic Solar Cells
Author(s) -
Matsuo Yutaka,
Kawai Junya,
Inada Hiroshi,
Nakagawa Takafumi,
Ota Hitoshi,
Otsubo Saika,
Nakamura Eiichi
Publication year - 2013
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201302607
Subject(s) - materials science , organic solar cell , fullerene , heterojunction , group (periodic table) , polymer solar cell , nanotechnology , chemical engineering , solar cell , optoelectronics , composite material , organic chemistry , polymer , chemistry , engineering
Adding a compact dihydromethano (CH 2 ) group to a 58π‐indene fullerene (C 60 (Ind)) creates a 56π‐electron dihydromethano/indene fullerene (C 60 (CH 2 )(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 CH 2 addend.