Mitigating substrate effects of van der Waals semiconductors using perfluoropolyether self-assembled monolayers.
Nanoscale
; 16(22): 10779-10788, 2024 Jun 06.
Article
em En
| MEDLINE
| ID: mdl-38757983
ABSTRACT
The properties of transition metal dichalcogenides (TMDCs) are critically dependent on the dielectric constant of substrates, which significantly limits their application. To address this issue, we used a perfluorinated polyether (PFPE) self-assembled monolayer (SAM) with low surface energy to increase the van der Waals (vdW) gap between TMDCs and the substrate, thereby reducing the interaction between them. This resulted in a reduction in the subthreshold swing value, an increase in the photoluminescence intensity of excitons, and a decrease in the doping effect by the substrate. This work will provide a new way to control the TMDC/dielectric interface and contribute to expanding the applicability of TMDCs.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Nanoscale
Ano de publicação:
2024
Tipo de documento:
Article