Poly(3-hexylthiophene)-based non-fullerene solar cells achieve high photovoltaic performance with small energy loss
作者： Feng Liu , Jianyun Zhang , Zichun Zhou , Jianqi Zhang , Zhixiang Wei
DOI: 10.1039/C7TA05108E
关键词: Materials science 、 HOMO/LUMO 、 Electron acceptor 、 Fullerene 、 Absorption (electromagnetic radiation) 、 Planar 、 Optoelectronics 、 Band gap 、 Acceptor 、 Photovoltaic system
摘要: Regioregular poly(3-hexylthiophene) (P3HT) as one of the most commonly used and thoroughly studied homopolymers has been demonstrated to be a promising commercial candidate for large-area, roll-to-roll printed solar cells. In this work, we designed new low-bandgap electron acceptor material ATT-3 by combining rhodanine octyl thieno[3,4-b]thiophene-2-carboxylate electron-deficient part. shows planar backbone configuration facilitating charge transport exhibits strong broad absorption ranging from 300 770 nm with an optical bandgap 1.61 eV. complementary well-matched HOMO LUMO energy levels P3HT. P3HT:ATT-3-based PSCs show high PCE 6.26% Voc 0.927 V small loss 0.68 eV, which is comparable best value obtained using O-IDTBR acceptor.
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