A Series of Iron(II)-NHC Sensitizers with Remarkable Power Conversion Efficiency in Photoelectrochemical Cells*.
Anil Reddy MarriEdoardo MarchiniValentin Diez CabanesRoberto ArgazziMariachiara PastoreStefano CaramoriCarlo Alberto BignozziPhilippe C GrosPublished in: Chemistry (Weinheim an der Bergstrasse, Germany) (2021)
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 Mg2+ and NBu4 I-based electrolyte and a thick 20 μm TiO2 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.
Keyphrases
- solar cells
- visible light
- quantum dots
- iron deficiency
- single cell
- induced apoptosis
- high resolution
- ionic liquid
- single molecule
- reduced graphene oxide
- solid state
- ion batteries
- gold nanoparticles
- highly efficient
- optical coherence tomography
- label free
- cell therapy
- liquid chromatography
- ultrasound guided
- stem cells
- mass spectrometry
- molecularly imprinted
- oxidative stress
- magnetic resonance imaging
- blood brain barrier
- energy transfer
- tandem mass spectrometry
- metal organic framework