Photoinduced edge-specific nanoparticle decoration of two-dimensional tungsten diselenide nanoribbons

Research output: Contribution to journalArticleResearchpeer-review

Authors

  • Tuan Hoang Tran
  • Alice Lassnig
  • Kenji Watanabe
  • Takashi Taniguchi
  • Stefan Wurster
  • Manfred Nachtnebel
  • Evgeniya Sheremet
  • Raul D. Rodriguez

Organisational units

External Organisational units

  • Tomsk Polytechnic University
  • Erich Schmid Institute of Materials Science
  • Research Center for Functional Materials, National Institute for Materials Science
  • Zentrum f Elektronenmikroskopie Graz

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.

Details

Original languageEnglish
Article number166
Number of pages9
JournalCommunications chemistry
Volume6.2023
Issue number1
DOIs
Publication statusPublished - 14 Aug 2023