Thermoelectric Properties of Benzothieno ...
Type de document :
Compte-rendu et recension critique d'ouvrage
Titre :
Thermoelectric Properties of Benzothieno-Benzothiophene Self-Assembled Monolayers in Molecular Junctions
Auteur(s) :
Gonzalez-Casal, Sergio [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Nanostructures, nanoComponents & Molecules - IEMN [NCM - IEMN]
Jouclas, Rémy [Auteur]
Université libre de Bruxelles [ULB]
Arbouch, Imane [Auteur]
Université de Mons / University of Mons [UMONS]
Geerts, Yves [Auteur]
Université libre de Bruxelles [ULB]
van Dyck, Colin [Auteur]
Université de Mons / University of Mons [UMONS]
Cornil, Jérôme [Auteur]
Université de Mons / University of Mons [UMONS]
Vuillaume, Dominique [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Nanostructures, nanoComponents & Molecules - IEMN [NCM - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Nanostructures, nanoComponents & Molecules - IEMN [NCM - IEMN]
Jouclas, Rémy [Auteur]
Université libre de Bruxelles [ULB]
Arbouch, Imane [Auteur]
Université de Mons / University of Mons [UMONS]
Geerts, Yves [Auteur]
Université libre de Bruxelles [ULB]
van Dyck, Colin [Auteur]
Université de Mons / University of Mons [UMONS]
Cornil, Jérôme [Auteur]
Université de Mons / University of Mons [UMONS]
Vuillaume, Dominique [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Nanostructures, nanoComponents & Molecules - IEMN [NCM - IEMN]
Titre de la revue :
Journal of Physical Chemistry Letters
Pagination :
11593-11600
Éditeur :
American Chemical Society
Date de publication :
2024
ISSN :
1948-7185
Mot(s)-clé(s) en anglais :
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Applied Physics (physics.app-ph)
Applied Physics (physics.app-ph)
Discipline(s) HAL :
Physique [physics]
Physique [physics]/Matière Condensée [cond-mat]
Physique [physics]/Matière Condensée [cond-mat]
Résumé en anglais : [en]
We report a combined experimental (C-AFM and SThM) and theoretical (DFT) study of the thermoelectric properties of molecular junctions made of self-assembled monolayers on Au of thiolated benzothieno-benzothiophene (BTBT) ...
Lire la suite >We report a combined experimental (C-AFM and SThM) and theoretical (DFT) study of the thermoelectric properties of molecular junctions made of self-assembled monolayers on Au of thiolated benzothieno-benzothiophene (BTBT) and alkylated BTBT derivatives (C8-BTBT-C8). We measure the thermal conductance per molecule at 15 pW/K and 8.8 pW/K, respectively, among the lowest values for molecular junctions so far reported (10-50 pW/K). The lower thermal conductance for C8-BTBT-C8 is consistent with two interfacial thermal resistances introduced by the alkyl chains, which reduce the phononic thermal transport in the molecular junction. The Seebeck coefficients are 36 μV/K and 245 μV/K, respectively, the latter due to the weak coupling of the core BTBT with the electrodes. We deduce a thermoelectric figure of merit ZT up to ca. 1E-4 for the BTBT molecular junctions at 300K, on a par with the values reported for archetype molecular junctions (olygo(phenylene ethynylene) derivatives).Lire moins >
Lire la suite >We report a combined experimental (C-AFM and SThM) and theoretical (DFT) study of the thermoelectric properties of molecular junctions made of self-assembled monolayers on Au of thiolated benzothieno-benzothiophene (BTBT) and alkylated BTBT derivatives (C8-BTBT-C8). We measure the thermal conductance per molecule at 15 pW/K and 8.8 pW/K, respectively, among the lowest values for molecular junctions so far reported (10-50 pW/K). The lower thermal conductance for C8-BTBT-C8 is consistent with two interfacial thermal resistances introduced by the alkyl chains, which reduce the phononic thermal transport in the molecular junction. The Seebeck coefficients are 36 μV/K and 245 μV/K, respectively, the latter due to the weak coupling of the core BTBT with the electrodes. We deduce a thermoelectric figure of merit ZT up to ca. 1E-4 for the BTBT molecular junctions at 300K, on a par with the values reported for archetype molecular junctions (olygo(phenylene ethynylene) derivatives).Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Projet ANR :
Source :
Fichiers
- document
- Accès libre
- Accéder au document
- SThM-SAM-BTBT-withSI-v2.pdf
- Accès libre
- Accéder au document
- 2409.12596
- Accès libre
- Accéder au document