Enhanced Performance of Organic Photovoltaic Cells Fabricated with a Methyl Thiophene-3-Carboxylate-Containing Alternating Conjugated Copolymer

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A new donor-acceptor copolymer, containing benzodithiophene (BDT) and methyl thiophene-3-carboxylate (3MT) units, is designed and synthesized for polymer solar cells (PSCs). The 3MT unit is used as an electron acceptor unit in this copolymer to provide a lower highest occupied molecular orbital (HOMO) level for obtaining polymer solar cells with a higher open-circuit voltage (VOC). The resulting bulk heterojunction PSC made of the copolymer and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) exhibits a power conversion efficiency (PCE) up to 4.52%, a short circuit current (JSC) of 10.5 mA center dot cm-2, and a VOC of 0.86 V.
Publisher
WILEY-BLACKWELL
Issue Date
2012-01
Language
English
Article Type
Article
Citation

MACROMOLECULAR RAPID COMMUNICATIONS, v.33, no.2, pp.146 - 151

ISSN
1022-1336
DOI
10.1002/marc.201100501
URI
http://hdl.handle.net/10203/282759
Appears in Collection
CBE-Journal Papers(저널논문)
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