Tropolone as a High‐Performance Robust Anchoring Group for Dye‐Sensitized Solar Cells |
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| Authors: | Dr Tomohiro Higashino Yamato Fujimori Kenichi Sugiura Yukihiro Tsuji Prof Dr Seigo Ito Prof Dr Hiroshi Imahori |
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| Institution: | 1. Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo‐ku, Kyoto, 615‐8510 (Japan);2. Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671‐2280 (Japan);3. Institute for Integrated Cell‐Material Sciences (WPI‐iCeMS), Kyoto University, Nishikyo‐ku, Kyoto, 615‐8510 (Japan) |
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| Abstract: | A tropolone group has been employed for the first time as an anchoring group for dye‐sensitized solar cells (DSSCs). The DSSC based on a porphyrin, YD2‐o‐C8T, with a tropolone moiety exhibited a power‐conversion efficiency of 7.7 %, which is only slightly lower than that observed for a reference porphyrin, YD2‐o‐C8 , with a conventional carboxylic group. More importantly, YD2‐o‐C8T was found to be superior to YD2‐o‐C8 with respect to DSSC durability and binding ability to TiO2. These results unambiguously demonstrate that tropolone is a highly promising dye‐anchoring group for DSSCs in terms of device durability as well as photovoltaic performance. |
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| Keywords: | anchoring groups light harvesting porphyrinoids sensitizers solar cells |
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