Enhancing the Thermoelectric Properties of Conjugated Polymers by Suppressing Dopant‐Induced Disorder - Université du Littoral Côte d'Opale Accéder directement au contenu
Article Dans Une Revue Advanced Materials Année : 2024

Enhancing the Thermoelectric Properties of Conjugated Polymers by Suppressing Dopant‐Induced Disorder

Résumé

Abstract Doping is a crucial strategy to enhance the performance of various organic electronic devices. However, in many cases, the random distribution of dopants in conjugated polymers leads to the disruption of the polymer microstructure, severely constraining the achievable performance of electronic devices. Here, it is shown that by ion‐exchange doping polythiophene‐based P[(3HT) 1‐x ‐stat‐(T) x ] ( x = 0 (P1), 0.12 (P2), 0.24 (P3), and 0.36 (P4)), remarkably high electrical conductivity of >400 S cm −1 and power factor of >16 µW m −1 K −2 are achieved for the random copolymer P3, ranking it among highest ever reported for unaligned P3HT‐based films, significantly higher than that of P1 (<40 S cm −1 , <4 µW m −1 K −2 ). Although both polymers exhibit comparable field‐effect transistor hole mobilities of ≈0.1 cm 2 V −1 s −1 in the pristine state, after doping, Hall effect measurements indicate that P3 exhibits a large Hall mobility up to 1.2 cm 2 V −1 s −1 , significantly outperforming that of P1 (0.06 cm 2 V −1 s −1 ). GIWAXS measurement determines that the in‐plane π – π stacking distance of doped P3 is 3.44 Å, distinctly shorter than that of doped P1 (3.68 Å). These findings contribute to resolving the long‐standing dopant‐induced‐disorder issues in P3HT and serve as an example for achieving fast charge transport in highly doped polymers for efficient electronics.
Fichier principal
Vignette du fichier
Adv. Mater.-2024-S. Wang - Suppressing Disorder.pdf (3.2 Mo) Télécharger le fichier
Origine : Publication financée par une institution

Dates et versions

hal-04546786 , version 1 (15-04-2024)

Identifiants

Citer

Suhao Wang, Wenjin Zhu, Ian E Jacobs, William A Wood, Zichen Wang, et al.. Enhancing the Thermoelectric Properties of Conjugated Polymers by Suppressing Dopant‐Induced Disorder. Advanced Materials, 2024, pp.1-11 / 2314062. ⟨10.1002/adma.202314062⟩. ⟨hal-04546786⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More