Benzoporphyrins: Selective Co-sensitization in Dye-Sensitized Solar Cells.
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 TiO2 -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 TiO2 photoelectrode.
Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität, Erlangen-Nürnberg, Egerlandstrasse 3, Erlangen, 91058, Germany.
Fabian
F
Lodermeyer
Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität, Erlangen-Nürnberg, Egerlandstrasse 3, Erlangen, 91058, Germany. ruben.costa@fau.de.
Rubén D
RD
Costa
Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität, Erlangen-Nürnberg, Egerlandstrasse 3, Erlangen, 91058, Germany.
Jenny
J
Malig
Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität, Erlangen-Nürnberg, Egerlandstrasse 3, Erlangen, 91058, Germany.
Norbert
N
Jux
Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität, Erlangen-Nürnberg, Egerlandstrasse 3, Erlangen, 91058, Germany. dirk.guldi@fau.de.
Dirk M
DM
Guldi
benzoporphyrins; donor-acceptor systems; dye-sensitized solar cells; electron transfer; selective co-sensitization