A Series of Iron(II)-NHC Sensitizers with Remarkable Power Conversion Efficiency in Photoelectrochemical Cells*.

Autor: Marri AR; Université de Lorraine, CNRS, L2CM, 54000, Nancy, France., Marchini E; Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via L.Borsari 46, 44121, Ferrara, Italy., Cabanes VD; Université de Lorraine, CNRS, LPCT, 54000, Nancy, France., Argazzi R; CNR-ISOF c/o Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via L.Borsari 46, 44121, Ferrara, Italy., Pastore M; Université de Lorraine, CNRS, LPCT, 54000, Nancy, France., Caramori S; Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via L.Borsari 46, 44121, Ferrara, Italy., Bignozzi CA; Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via L.Borsari 46, 44121, Ferrara, Italy., Gros PC; Université de Lorraine, CNRS, L2CM, 54000, Nancy, France.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2021 Nov 22; Vol. 27 (65), pp. 16260-16269. Date of Electronic Publication: 2021 Oct 13.
DOI: 10.1002/chem.202103178
Abstrakt: A series of six new Fe(II)NHC-carboxylic sensitizers with their ancillary ligand decorated with functions of varied electronic properties have been designed with the aim to increase the metal-to- surface charge separation and light harvesting in iron-based dye-sensitized solar cells (DSSCs). ARM130 scored the highest efficiency ever reported for an iron-sensitized solar cell (1.83 %) using Mg 2+ and NBu 4 I-based electrolyte and a thick 20 μm TiO 2 anode. Computational modelling, transient absorption spectroscopy and electrochemical impedance spectroscopy (EIS) revealed that the electronic properties induced by the dimethoxyphenyl-substituted NHC ligand of ARM130 led to the best combination of electron injection yield and spectral sensitivity breadth.
(© 2021 Wiley-VCH GmbH.)
Databáze: MEDLINE
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