期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 104, 期 -, 页码 45-52出版社
ELSEVIER
DOI: 10.1016/j.solmat.2012.04.044
关键词
Benzodithiophene; Conjugated polymer; Organic solar cells; Photovoltaic devices
资金
- Italian Ministry of Economic Development
We present the synthesis and characterization of a novel copolymer from benzodithiophene and alkylsulfanyl-bithiophene units, poly[4,8-bis(2-ethylhexyloxy)benzo[1,2-b:4,5-b']dithiophene-alt-4,4'-bis(octylsulfanyl)-2,2'-bithiophene] (PolyS). The structural, electrochemical and photophysical properties of PolyS were investigated by gel permeation chromatography (GPC), thermogravimetric analysis (TGA), NMR, UV-vis, photoluminescence (PL) spectroscopy and cyclic voltammetry (CV). PolyS was used to fabricate bulk-heterojunction polymer solar cells (PSCs) in combination with the [60]PCBM and [70]PCBM (electron acceptors). The device realized using [70]PCBM shows a better current output due to the increased absorption of the blend film compared to the PolyS:[60]PCBM one. The power conversion efficiency of the best PSC realized is 2.3% under 100 mW/cm(2) AM 1.5 G illumination. (C) 2012 Elsevier B.V. All rights reserved.
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