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Tropolone as a High‐Performance Robust Anchoring Group for Dye‐Sensitized Solar Cells
Author(s) -
Higashino Tomohiro,
Fujimori Yamato,
Sugiura Kenichi,
Tsuji Yukihiro,
Ito Seigo,
Imahori Hiroshi
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201502951
Subject(s) - tropolone , dye sensitized solar cell , moiety , porphyrin , anchoring , materials science , chemistry , photochemistry , organic chemistry , electrode , structural engineering , engineering , electrolyte
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 TiO 2 . 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.