||Tropolone as a High-Performance Robust Anchoring Group for Dye-Sensitized Solar Cells.
Higashino, Tomohiro ,
Fujimori, Yamato ,
Sugiura, Kenichi ,
Tsuji, Yukihiro ,
Ito, SeigoImahori, Hiroshi
9056 , 2015-07-27 , wiley
Article first published online: 16 JUN 2015
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.