RSC_Nanoscale
Optimized plasmonic enhancement and deformation reduction in MoS2 monolayers using Au-nanowire-embedded polymers
Hybrid systems consisting of transition metal dichalcogenide (TMD) layers and metal nanostructures offer promising opportunities to control excitonic behaviors and enhance light–matter interaction in TMDs. This work introduces an unprecedented approach to integrate exfoliated MoS2 monolayers with gold nanowire (AuNW)-embedded PDMS films. Localized surface plasmon excitation in AuNWs boosts light scattering, as evidenced by optical characterization and numerical simulations. Notably, MoS2 monolayers on AuNW-embedded PDMS films exhibit a five-fold increase in photoluminescence intensity compared to those on non-embedded AuNW/PDMS substrates. This enhancement arises from the extended and intensified electric fields resulting from the substantial dielectric permittivity contrast between PDMS and air. Furthermore, embedding AuNWs effectively mitigates mechanical deformation of MoS2 monolayers, suppressing strain-induced dissociation of photo-generated excitons. These findings demonstrate the potential of AuNW-embedded polymers for advanced TMD-based plasmonic device applications.
- Nahyun Kim
- Jungeun Song
- Jungyoon Cho
- Anh Thi Nguyen
- Seawoo Moon
- Ambrose Seo
- Dong-Wook Kim
https://pubs.rsc.org/en/content/articlelanding/2025/nr/d5nr01147g
Image created by minjeong Kim / Nanosphere
RSC_Nanoscale
Optimized plasmonic enhancement and deformation reduction in MoS2 monolayers using Au-nanowire-embedded polymers
Hybrid systems consisting of transition metal dichalcogenide (TMD) layers and metal nanostructures offer promising opportunities to control excitonic behaviors and enhance light–matter interaction in TMDs. This work introduces an unprecedented approach to integrate exfoliated MoS2 monolayers with gold nanowire (AuNW)-embedded PDMS films. Localized surface plasmon excitation in AuNWs boosts light scattering, as evidenced by optical characterization and numerical simulations. Notably, MoS2 monolayers on AuNW-embedded PDMS films exhibit a five-fold increase in photoluminescence intensity compared to those on non-embedded AuNW/PDMS substrates. This enhancement arises from the extended and intensified electric fields resulting from the substantial dielectric permittivity contrast between PDMS and air. Furthermore, embedding AuNWs effectively mitigates mechanical deformation of MoS2 monolayers, suppressing strain-induced dissociation of photo-generated excitons. These findings demonstrate the potential of AuNW-embedded polymers for advanced TMD-based plasmonic device applications.
https://pubs.rsc.org/en/content/articlelanding/2025/nr/d5nr01147g
Image created by minjeong Kim / Nanosphere