ol4035275_si_001.pdf (3.8 MB)
Methanofullerenes, C60(CH2)n (n = 1, 2, 3), as Building Blocks for High‑Performance Acceptors Used in Organic Solar Cells
journal contribution
posted on 2014-01-17, 00:00 authored by Dan He, Xiaoyan Du, Zuo Xiao, Liming DingSelective preparation
of C60(CH2)n (n = 1, 2, 3) was realized via
a “Bingel-decarboxylation” route. A 54π-electron
derivative of C60(CH2)2, OQBMF, demonstrates
an outstanding power conversion efficiency (PCE) of 6.43% (Voc = 0.95 V, Jsc = 9.67 mA cm–2, FF = 70%) in fullerene:P3HT solar
cells since the small CH2 addends lift up fullerene LUMO
and increase Voc significantly without
decreasing mobility significantly.