Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5458760 | Journal of Alloys and Compounds | 2017 | 25 Pages |
Abstract
Interaction of two-dimensional (2D) transition metal dichalcogenides (TMDs) with noble metal nanoparticles (NPs) is of great interest from the perspective of fundamental science, as it develops an excellent platform to study plasmon-exciton interaction and charge transfer. Here, we report a method for the large-scale synthesis of noble metals (Ag, Au and Pt) NPs decorated MoS2 flake. We find that the NPs can affect the photoluminescence (PL) emission in two ways, namely plasmon-exciton interaction and charge transfer. The types of doping-induced by the Ag, Au and Pt NPs are determined from the spectral weight of neutral and charged excitons in the PL spectra. Our results provide a quantitative estimation of the origin of PL emission from MoS2 based 2D-0D heterostructures and suggest new avenues for 2D nanoelectronics, gas sensing, catalysis, and biosensing.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Shib Shankar Singha, Dipanjan Nandi, Tara Shankar Bhattacharya, Prasanna Kumar Mondal, Achintya Singha,