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Title
Solution-processed bulk heterojunction organic solar cells based on an oligothiophene derivative
Article in journal
Authors
Bin Yin, Liying Yang, Yongsheng Liu, Yongsheng Chen, Qingjin Qi, Fengling Zhang, Shougen Yin
Publication Year
2010
Source
Applied Physics Letters, 2010, (97)2, 023303
Link to Source (DOI)
10.1063/1.3460911
Abstract
<p>Organic bulk heterojunction (BHJ) solar cells based on a dicyanovinyl-substituted oligothiophene as a donor and [6,6]-phenyl C61 butyric acid methyl ester (PCBM) as an acceptor were fabricated and characterized. The oligothiophene derivative can absorb long wavelength photons of the solar radiation, which makes the solar cells with an optimized weight ratio of 1:1.4 have a decent short-circuit current density (12.4 mA/cm(2)) and open-circuit voltage (0.88 V) under AM 1.5G illumination with an intensity of 100 mW/cm(2). A power conversion efficiency (PCE) of 3.7% is achieved, which is among the best PCEs of solution processed small molecule BHJ solar cells.</p>