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Title: Surface plasmon enhanced photoluminescence of monolayer WS₂ on ion beam modified functional substrate
Authors: Chu, Lingrui
Li, Ziqi
Zhu, Han
Li, Rang
Ren, Feng
Chen, Feng
Keywords: Science::Physics
Issue Date: 2021
Source: Chu, L., Li, Z., Zhu, H., Li, R., Ren, F. & Chen, F. (2021). Surface plasmon enhanced photoluminescence of monolayer WS₂ on ion beam modified functional substrate. Applied Physics Letters, 118(26), 263103-.
Journal: Applied Physics Letters
Abstract: Developing efficient methods for boosting light-matter interactions is critical to improve the functionalities of two-dimensional (2D) transition metal dichalcogenides toward next-generation optoelectronic devices. Here, we demonstrate that the light-matter interactions in tungsten disulfide (WS2) monolayer can be significantly enhanced by introducing an air-stable functional substrate (fused silica with embedded plasmonic Ag nanoparticles). Distinctive from conventional strategies, the Ag nanoparticles are embedded under the surface of fused silica via ion implantation, forming a functional substrate for WS2 monolayer with remarkably environmental stability. A tenfold photoluminescence enhancement in WS2 monolayer has been achieved due to the plasmonic effect of Ag nanoparticles. This work offers a strategy to fabricate the plasmon-2D hybrid system at low cost and large scale and paves the way for their applications in optoelectronics and photonics.
ISSN: 0003-6951
DOI: 10.1063/5.0054333
Schools: School of Physical and Mathematical Sciences 
Departments: Division of Physics and Applied Physics
Rights: © 2021 Author(s). All rights reserved. This paper was published by AIP Publishing in Applied Physics Letters and is made available with permission of Author(s).
Fulltext Permission: open
Fulltext Availability: With Fulltext
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