期刊
SYNTHETIC METALS
卷 178, 期 -, 页码 38-43出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2013.06.024
关键词
Small molecules; Isoindigo; Organic solar cells; High open-circuit voltage
资金
- National Natural Science Foundation of China [21274134, 51173199]
- New Century Excellent Talents in University [NCET-11-0473]
- Department of Science and Technology of Shandong Province [2010GGC10345]
- Qingdao Municipal Science and Technology Program [11-2-4-22-hz]
One isoindigo and triphenylamine (TPA) based small molecule was synthesized by Suzuki coupling reaction. The obtained molecule was characterized by H-1 NMR C-13 NMR and MS. The obtained molecule absorbs light from 400 to 743 nm in thin solid film. The band-gaps of the resulting molecule calculated from the absorption onset and cyclic voltammetry are respectively around 1.67 eV and 1.60 eV. Photovoltaic cell by using the blend of the obtained small molecule and [6,6]-phenyl-C-61 butyric acid methyl ester (PCBM) as an active layer was fabricated by spin-coating method. The solar cells show open-circuit voltage (V-oc) of 1.0V with maximum power conversion efficiency 0.61%. This high open-circuit voltage is among the highest in literatures for solution processed small molecule organic solar cells. (c) 2013 Elsevier B.V. All rights reserved.
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