“Iridium effect” in cyclometalated iridium complexes for p-type dye sensitized solar cells - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Dyes and Pigments Année : 2019

“Iridium effect” in cyclometalated iridium complexes for p-type dye sensitized solar cells

Résumé

Cyclometallated iridium complexes have shown great promises as photosensitizers for p-type dye sensitized solar cells (p-DSSC), in particular due to the occurrence of very long-lived interfacial charge separated states, leading to high open circuit potentials (Voc). To rationalize this experimental fact, we prepared a new series of iridium photosensitizers specially designed for NiO based p-DSSC, in order to assess the role of a panel of factors on the overall photovoltaic performances. We probed the electronic coupling between the iridium complex and the semiconductor at the level of the anchor, the importance of the frontier orbitals distribution over the photosensitizers structures and the impact of iridium(III) vs. a lighter metal ion like ruthenium(II). The synthesis and full characterizations of these new photosensitizers are presented, and their performances within p-type DSSC are given and discussed in light of their structures. A combination of a high spin-orbit coupling and a smart design of the anchoring ligands explains the interesting performances of iridium complexes as photosensitizers for p-DSSC.
Fichier principal
Vignette du fichier
ms_DYPI_2019_178.pdf (1.59 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03017382 , version 1 (20-11-2020)

Identifiants

Citer

Odobel Fabrice, Florent Légalité, Daniel Escudero, Yann Pellegrin, Errol Blart, et al.. “Iridium effect” in cyclometalated iridium complexes for p-type dye sensitized solar cells. Dyes and Pigments, 2019, 171, pp.107693. ⟨10.1016/j.dyepig.2019.107693⟩. ⟨hal-03017382⟩
52 Consultations
108 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More