Active Layer Materials for Organic Solar Cells - Organic Solar Cells: Materials and Device Physics - page 36

Scheme 2.14 Molecular structures of fullerene multiadduct derivatives

PCE values of the PSCs based on P3HT/IC60BA and P3HT/IC70BA reached 5.44
and 5.64 %, respectively [ 73 , 75 ], which is more than 40 % increased in com-
parison with that of the PSCs based on P3HT/PC60BM. After further device
optimization, the PSCs based on P3HT/IC60BA displayed a V oc of 0.84 V, a J sc of
10.61 mA cm -2 , a FF of 72.7 %, and a PCE of 6.48 % [ 74 ]. The photovoltaic
properties of the fullerene derivatives were studied by fabricating the PSCs based
on P3HT as donor and the fullerene derivatives as acceptor, and the results are
listed in Table 2.6 [ 73 - 75 ] Scheme 2.15 .

2.2.2.3 Other Fullerenes

In addition to the above-mentioned fullerene derivative acceptors, there are some
other fullerene derivatives for application as acceptors in PSCs reported in liter-
ature. Such as PC84BM [ 76 ] and endohedral fullerenes [ 77 ] and so on.