Titre :

Exploring the electronic and thermoelectric properties of molecular junctions incorporating organometallic complexes.

Auteur(s) :

Santos Almeida, Joseane [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Gonzalez Casal, Sergio [Auteur]
Nanostructures, nanoComponents & Molecules - IEMN [NCM - IEMN]
Al Sabea, Hassan [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Barth, Valentin [Auteur]
University of Konstanz
Micra, Gautam [Auteur]
University of Konstanz
Delmas, Vincent [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Guérin, David [Auteur]
Nanostructures, nanoComponents & Molecules - IEMN [NCM - IEMN]
Galangau, Olivier [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Tiwary, Tiark [Auteur]
University of Konstanz
Roisnel, Thierry [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Dorcet, Vincent [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Norel, Lucie [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
van Dyck, Colin [Auteur]
Université de Mons / University of Mons [UMONS]
Scheer, Elke [Auteur]
University of Konstanz
Vuillaume, Dominique [Auteur]
Nanostructures, nanoComponents & Molecules - IEMN [NCM - IEMN]
Cornil, Jérôme [Auteur]
Université de Mons / University of Mons [UMONS]
Rigaut, Stéphane [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Costuas, Karine [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]

Mot(s)-clé(s) en anglais :

Self-assembled monolayer; Single molecule; Mechanically controllable break junction; Conductive Atomic Force Microscopy; Scanning Thermal Microscopy; Organometallic molecular junction; Electronic conductance; Heat conductance; Thermoelectric properties; Seebeck coefficient; Electron transport; Density Functional Theory; Green’s function

Discipline(s) HAL :

Chimie
Physique [physics]

Résumé en anglais : [en]

The electronic and thermoelectric properties of two parent iron and ruthenium metal-acetylide molecular junctions were studied using complementary experimental techniques and quantum chemical simulations. We perform physical ...
Lire la suite >The electronic and thermoelectric properties of two parent iron and ruthenium metal-acetylide molecular junctions were studied using complementary experimental techniques and quantum chemical simulations. We perform physical characterizations of single-molecule and self-assembled monolayer junctions of the same molecules that allowed meaningful comparisons between the Ru and Fe adducts. In the case of the iron-containing junctions, two distinct oxidation states are present. These junctions exhibit one of the highest Seebeck coefficients (∼130 μV/K) reported to date for similar systems and importantly substantial electron conductance and limited thermal conductance. Therefore, the experimental thermoelectric Figure of Merit ZT for iron-containing junctions reaches up to 0.7 when considering the highest measured conductance. It is one of the highest ZT values reported for molecular systems at room temperature.Lire moins >

Langue :

Anglais

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL

Date de dépôt :

2025-04-05T06:00:03Z