Bridging length scales in organic mixed ionic-electronic conductors through internal strain and mesoscale dynamics.
Journal
Nature materials
ISSN: 1476-4660
Titre abrégé: Nat Mater
Pays: England
ID NLM: 101155473
Informations de publication
Date de publication:
26 Feb 2024
26 Feb 2024
Historique:
received:
13
07
2023
accepted:
18
01
2024
medline:
27
2
2024
pubmed:
27
2
2024
entrez:
27
2
2024
Statut:
aheadofprint
Résumé
Understanding the structural and dynamic properties of disordered systems at the mesoscale is crucial. This is particularly important in organic mixed ionic-electronic conductors (OMIECs), which undergo significant and complex structural changes when operated in an electrolyte. In this study, we investigate the mesoscale strain, reversibility and dynamics of a model OMIEC material under external electrochemical potential using operando X-ray photon correlation spectroscopy. Our results reveal that strain and structural hysteresis depend on the sample's cycling history, establishing a comprehensive kinetic sequence bridging the macroscopic and microscopic behaviours of OMIECs. Furthermore, we uncover the equilibrium and non-equilibrium dynamics of charge carriers and material-doping states, highlighting the unexpected coupling between charge carrier dynamics and mesoscale order. These findings advance our understanding of the structure-dynamics-function relationships in OMIECs, opening pathways for designing and engineering materials with improved performance and functionality in non-equilibrium states during device operation.
Identifiants
pubmed: 38409601
doi: 10.1038/s41563-024-01813-3
pii: 10.1038/s41563-024-01813-3
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Alfred P. Sloan Foundation
ID : FG-2019-12046
Organisme : NSF | Directorate for Mathematical & Physical Sciences | Division of Materials Research (DMR)
ID : DMR-1751308
Organisme : NSF | Directorate for Mathematical & Physical Sciences | Division of Materials Research (DMR)
ID : DMR-1720139
Informations de copyright
© 2024. The Author(s), under exclusive licence to Springer Nature Limited.
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