Transiently delocalized states enhance hole mobility in organic molecular semiconductors.
Journal
Nature materials
ISSN: 1476-4660
Titre abrégé: Nat Mater
Pays: England
ID NLM: 101155473
Informations de publication
Date de publication:
Nov 2023
Nov 2023
Historique:
received:
13
10
2022
accepted:
14
08
2023
medline:
15
9
2023
pubmed:
15
9
2023
entrez:
14
9
2023
Statut:
ppublish
Résumé
Evidence shows that charge carriers in organic semiconductors self-localize because of dynamic disorder. Nevertheless, some organic semiconductors feature reduced mobility at increasing temperature, a hallmark for delocalized band transport. Here we present the temperature-dependent mobility in two record-mobility organic semiconductors: dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]-thiophene (DNTT) and its alkylated derivative, C8-DNTT-C8. By combining terahertz photoconductivity measurements with atomistic non-adiabatic molecular dynamics simulations, we show that while both crystals display a power-law decrease of the mobility (μ) with temperature (T) following μ ∝ T
Identifiants
pubmed: 37709929
doi: 10.1038/s41563-023-01664-4
pii: 10.1038/s41563-023-01664-4
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1361-1369Informations de copyright
© 2023. The Author(s), under exclusive licence to Springer Nature Limited.
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