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[70]Fullerene‐Based Materials for Organic Solar Cells
Author(s) -
Troshin Pavel A.,
Hoppe Harald,
Peregudov Alexander S.,
Egginger Martin,
Shokhovets Sviatoslav,
Gobsch Gerhard,
Sariciftci N. Serdar,
Razumov Vladimir F.
Publication year - 2011
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201000246
Subject(s) - fullerene , organic solar cell , polymer solar cell , chlorobenzene , polymer , materials science , acceptor , chemical engineering , polymer chemistry , organic chemistry , chemistry , catalysis , composite material , physics , engineering , condensed matter physics
The synthesis, characterization and photovoltaic study of two novel derivatives of [70]fullerene, phenyl‐C 71 ‐propionic acid propyl ester ([70]PCPP) and phenyl‐C 71 ‐propionic acid butyl ester ([70]PCPB), are reported. [70]PCPP and [70]PCPB outperform the conventional material (6,6)‐phenyl‐C 71 ‐butyric acid methyl ester ([70]PCBM) in solar cells based on poly(2‐methoxy‐5‐{3′,7′‐dimethyloctyloxy}‐ p ‐phenylene vinylene) (MDMO‐PPV) as a donor polymer using chlorobenzene (CB) or dichlorobenzene (DCB) as solvents. AFM data suggest that improvement of the device efficiency should be attributed to the increased phase compatibility between the novel C 70 derivatives and the polymer matrix. [70]PCPP and [70]PCBM showed more or less equally high performances in solar cells comprising poly(3‐hexylthiophene) (P3HT) as a donor polymer. Optical modeling revealed that the application of [70]fullerene derivatives as acceptor materials in P3HT‐based bulk heterojunction solar cells might give approximately 10 % higher short circuit current densities than using C 60 ‐based materials such as [60]PCBM. The high solubility of [70]PCPP and [70]PCPB and their good compatibility with the donor polymers suggest these fullerene derivatives as promising electron acceptor materials for use in efficient bulk heterojunction organic solar cells.