A Low-Energy-Gap Organic Dye for High-Performance Small-Molecule Organic Solar Cells

A novel donor–acceptor–acceptor (D–A–A) donor molecule, DTDCTB, in which an electron-donating ditolylaminothienyl moiety and an electron-withdrawing dicyanovinylene moiety are bridged by another electron-accepting 2,1,3-benzothiadiazole block, has been synthesized and characterized. A vacuum-deposit...

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Published inJournal of the American Chemical Society Vol. 133; no. 40; pp. 15822 - 15825
Main Authors Lin, Li-Yen, Chen, Yi-Hong, Huang, Zheng-Yu, Lin, Hao-Wu, Chou, Shu-Hua, Lin, Francis, Chen, Chang-Wen, Liu, Yi-Hung, Wong, Ken-Tsung
Format Journal Article
LanguageEnglish
Published WASHINGTON American Chemical Society 12.10.2011
Amer Chemical Soc
Subjects
Chemistry
Chemistry, Multidisciplinary
Physical Sciences
Science & Technology
THIN-FILMS
PHOTOVOLTAICS
EFFICIENT
INTERNAL CHARGE-TRANSFER
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Summary:A novel donor–acceptor–acceptor (D–A–A) donor molecule, DTDCTB, in which an electron-donating ditolylaminothienyl moiety and an electron-withdrawing dicyanovinylene moiety are bridged by another electron-accepting 2,1,3-benzothiadiazole block, has been synthesized and characterized. A vacuum-deposited organic solar cell employing DTDCTB combined with the electron acceptor C70 achieved a record-high power conversion efficiency (PCE) of 5.81%. The respectable PCE is attributed to the solar spectral response extending to the near-IR region and the ultracompact absorption dipole stacking of the DTDCTB thin film.
Bibliography:ObjectType-Article-1
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ISSN:0002-7863
1520-5126
DOI:10.1021/ja205126t