PETSAGKOURAKIS, Ioannis; PAVLOPOULOU, Eleni; CLOUTET, Eric; CHEN, Yan Fang; LIU, Xjianjie; FAHLMAN, Mats; BERGGREN, Magnus; CRISPIN, Xavier; DILHAIRE, Stefan; FLEURY, Guillaume; HADZIIOANNOU, Georges

doi:10.1016/j.orgel.2017.11.018

Métadonnées

Licence d’utilisation du document

http://creativecommons.org/licenses/by-sa/

PETSAGKOURAKIS, Ioannis
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies

PAVLOPOULOU, Eleni
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies

CLOUTET, Eric
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
Laboratoire de Chimie des Polymères Organiques [LCPO]

Langue

Article de revue

Ce document a été publié dans

Organic Electronics. 2018, vol. 52, p. 335-341

Elsevier

Résumé en anglais

Room temperature flexible heat harvesters based on conducting polymers are ideally suited to cover the energy demands of the modern nomadic society. The optimization of their thermoelectric efficiency is usually sought by tuning the oxidation levels of the conducting polymers, even if such methodology is detrimental to the Seebeck coefficient (S) as both the Seebeck coefficient and the electrical conductivity (σ) are antagonistically related to the carrier concentration. Here we report a concurrent increase of S and σ and we experimentally derive the dependence of Seebeck coefficient on charge carrier mobility for the first time in organic electronics. Through specific control of the conducting polymer synthesis, we enabled the formation of a denser percolation network that facilitated the charge transport and the thermodiffusion of the charge carriers inside the conducting polymer layer, while the material shifted from a Fermi glass towards a semi-metal, as its crystallinity increased. This work sheds light upon the origin of the thermoelectric properties of conducting polymers, but also underlines the importance of enhanced charge carrier mobility for the design of efficient thermoelectric polymers.< Réduire

Mots clés en anglais

PEDOT

Charge transport

Seebeck coefficient

Thermoelectrics

Conducting polymers

DOI

http://dx.doi.org/10.1016/j.orgel.2017.11.018

Project ANR

“Plate-forme de l'Université de Bordeaux pour l'organique électronique imprimable : de la molécule aux dispositifs et systèmes intégrés - valorisation et commercialisation” - ANR-10-EQPX-0028
Advanced Materials by Design - ANR-10-LABX-0042
Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003

Origine

Importé de hal

Unités de recherche

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798