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Benzoporphyrins: Selective Co‐sensitization in Dye‐Sensitized Solar Cells
Author(s) -
Lodermeyer Fabian,
Costa Rubén D.,
Malig Jenny,
Jux Norbert,
Guldi Dirk M.
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201600802
Subject(s) - dye sensitized solar cell , sensitization , adsorption , energy transfer , nanoparticle , materials science , chemical engineering , energy conversion efficiency , photochemistry , nanotechnology , chemistry , optoelectronics , electrode , organic chemistry , chemical physics , electrolyte , engineering , immunology , biology
A novel class of dyes, namely benzoporphyrins, was synthesized and implemented into dye‐sensitized solar cells. They feature complementary absorptions compared to N719 , which renders them promising candidates for co‐sensitization in DSSCs. Notably, metallated benzoporphyrins reveal a TiO 2 –nanoparticle attachment that is size and aggregation dependent. Therefore, unproductive energy‐transfer events between the selectively attached dyes can be prevented. In light of the latter, an efficiency improvement of 39 % has been achieved upon selective adsorption of benzoporphyrins and N719 onto different layers of TiO 2 photoelectrode.