Photoluminescence enhancement in few-layer WS2films via Au nanoparticles

Sin Yuk Choi, Cho Tung Yip, Guang Can Li, Dangyuan Lei, Kin Hung Fung, Siu Fung Yu, Jianhua Hao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)

Abstract

� 2015 Author(s). Nano-composites of two-dimensional atomic layered WS2and Au nanoparticles (AuNPs) have been fabricated by sulfurization of sputtered W films followed by immersing into HAuCl4aqueous solution. The morphology, structure and AuNPs distribution have been characterized by electron microscopy. The decorated AuNPs can be more densely formed on the edge and defective sites of triangle WS2. We have compared the optical absorption and photoluminescence of bare WS2and Au-decorated WS2layers. Enhancement in the photoluminescence is observed in the Au-WS2nano-composites, attributed to localized surface plasmonic effect. This work provides the possibility to develop photonic application in twodimensional materials.
Original languageEnglish
Article number067148
JournalAIP Advances
Volume5
Issue number6
DOIs
Publication statusPublished - 1 Jan 2015

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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