Abstract
Metallic nanoparticles are widely explored for boosting light-matter coupling, optoelectronic response, and improving photocatalytic performance of two-dimensional (2D) materials. However, the target area is restricted to either top or bottom of the 2D flakes. Here, we introduce an approach for edge-specific nanoparticle decoration via light-assisted reduction of silver ions and merging of silver seeds. We observe arrays of the self-limited in size silver nanoparticles along tungsten diselenide WSe2 nanoribbon edges. The density of nanoparticles is tunable by adjusting the laser fluence. Scanning electron microscopy, atomic force microscopy, and Raman spectroscopy are used to investigate the size, distribution, and photo-response of the deposited plasmonic nanoparticles on the quasi-one-dimensional nanoribbons. We report an on-surface synthesis path for creating mixed-dimensional heterostructures and heterojunctions with potential applications in opto-electronics, plasmonics, and catalysis, offering improved light matter coupling, optoelectronics response, and photocatalytic performance of 2D materials.
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 166 |
| Seitenumfang | 9 |
| Fachzeitschrift | Communications chemistry |
| Jahrgang | 6.2023 |
| Ausgabenummer | 1 |
| DOIs | |
| Publikationsstatus | Veröffentlicht - 14 Aug. 2023 |
Bibliographische Notiz
Funding Information:This work has been supported by the Austrian Science Fund (FWF der Wissenschaftsfonds) through project number I4323-N36 and START grant number Y1298-N, Russian Foundation for Basic Research (RFBR, project number 19-52-14006). K.W. and T.T. acknowledge support from the JSPS KAKENHI (Grant Numbers 19H05790, 20H00354 and 21H05233). A.L. acknowledges the funding of Austrian Science Fund (FWF) through project number T891-N36. The authors would also like to thank the AFM/Raman facility of the Department of Applied Geosciences and Geophysics at Montanuniversität Leoben. This work was supported by the European Union Horizon 2020 program (grant No. 823717_ESTEEM3). The purchase of the SEM system was enabled by the project “HRSM-Projekt ELMINet Graz-Korrelative Elektronenmikroskopie in den Biowissenschaften” (i.e., cooperation within “BioTechMed-Graz”, a research alliance of the University of Graz, the Medical University of Graz, and the Graz University of Technology), which was financed by the Austrian Federal Ministry of Education, Science, and Research (BMBWF).
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