Department of Chemistry
Metallated conjugation in small-sized-molecular donors for solution-processed organic solar cells
© 2015 Science China Press and Springer-Verlag Berlin Heidelberg. Four metallated conjugated oligothiophenes, S-1, S-2, S-3 and S-4, with platinum(II) aryleneethynylenes as the electron-rich building block were synthesized to investigate their physicochemical and photovoltaic properties. These small molecules possess fairly low-lying HOMO energy levels which match with the LUMO energy level of the electron acceptor PC70BM ([6,6]-phenyl-C71-butyric acid methyl ester). Using the simple process of spin-coating solution fabrication technique, S-1:PC70BM (1:4, w/w) based organic solar cells exhibiting a high V oc of 0.913 V, with a PCE value of 0.88% were developed. In contrast, the OSC device based on S-2:PC70BM (3:7, w/w) displayed a higher PCE of 1.59% with a higher J sc value of 5.89 mA cm-2. The device based on S-4:PC70BM (1:4, w/w) exhibited a PCE value of 1.56%, with a V oc of 0.917 V.
acetylide, oligothiophene, organic solar cell, photovoltaics, platinum
Source Publication Title
Science China Chemistry
Link to Publisher's Edition
Cui, Chaohua, Yunye Zhang, Wallace C. H. Choy, Hua Li, and Wai-Yeung Wong. "Metallated conjugation in small-sized-molecular donors for solution-processed organic solar cells." Science China Chemistry 58.2 (2015): 347-356.