Engineering of highly efficient tetrahydroquinoline sensitizers for dye-sensitized solar cells |
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| Authors: | Yan Hao Xichuan Yang Jiayan Cong Anders Hagfeldt Licheng Sun |
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| Affiliation: | 1. State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 2# Linggong Rd., 116024 Dalian, China;2. School of Chemical Science and Engineering, Center of Molecular Devices, Physical Chemistry & Organic Chemistry, Royal Institute of Technology (KTH), Teknikringen 30, 10044 Stockholm, Sweden;3. Department of Physical and Analytical Chemistry, Uppsala University, PO Box 259, SE-751 05 Uppsala, Sweden |
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| Abstract: | Four novel tetrahydroquinoline dyes by inserting isophorone and/or thiophene moieties as π bridge between the electron donating unit of substituted tetrahydroquinoline and the electron withdrawing unit of cyano carboxylic acid have been synthesized and successfully applied to dye-sensitized solar cells. Among them, DSCs sensitized by HYTIC, which shows the simplest molecular structure, exhibit improved efficiency of 7.0%. This by now is the highest efficiency for the reported tetrahydroquinoline sensitizers and comparable to the performance of N719-sensitized solar cells under the conditions employed here. |
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