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Article Dans Une Revue Inorganics Année : 2018

NHC-Based Iron Sensitizers for DSSCs

Yann Trolez
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Résumé

Nanostructured dye-sensitized solar cells (DSSCs) are promising photovoltaic devices because of their low cost and transparency. Ruthenium polypyridine complexes have long been considered as lead sensitizers for DSSCs, allowing them to reach up to 11% conversion efficiency. However, ruthenium suffers from serious drawbacks potentially limiting its widespread applicability, mainly related to its potential toxicity and scarcity. This has motivated continuous research efforts to develop valuable alternatives from cheap earth-abundant metals, and among them, iron is particularly attractive. Making iron complexes applicable in DSSCs is highly challenging due to an ultrafast deactivation of the metal-ligand charge-transfer (MLCT) states into metal-centered (MC) states, leading to inefficient injection into TiO 2. In this review, we present our latest developments in the field using Fe(II)-based photosensitizers bearing N-heterocyclic carbene (NHC) ligands, and their use in DSSCs. Special attention is paid to synthesis, photophysical, electrochemical, and computational characterization.
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Dates et versions

hal-01825557 , version 1 (25-10-2018)

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Thibaut Duchanois, Li Liu, Mariachiara Pastore, Antonio Monari, Cristina Cebrian, et al.. NHC-Based Iron Sensitizers for DSSCs. Inorganics, 2018, 6 (2), pp.63. ⟨10.3390/inorganics6020063⟩. ⟨hal-01825557⟩
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