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

被引:221
作者
Lin, Li-Yen [2 ]
Chen, Yi-Hong [1 ]
Huang, Zheng-Yu [1 ]
Lin, Hao-Wu [1 ]
Chou, Shu-Hua [2 ]
Lin, Francis [2 ]
Chen, Chang-Wen [1 ]
Liu, Yi-Hung [2 ]
Wong, Ken-Tsung [2 ]
机构
[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan
[2] Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan
关键词
INTERNAL CHARGE-TRANSFER; THIN-FILMS; EFFICIENT; PHOTOVOLTAICS;
D O I
10.1021/ja205126t
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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 C-70 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.
引用
收藏
页码:15822 / 15825
页数:4
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