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Title: Photoluminescence enhancement in few-layer WS{sub 2} films via Au nanoparticles

Abstract

Nano-composites of two-dimensional atomic layered WS{sub 2} and Au nanoparticles (AuNPs) have been fabricated by sulfurization of sputtered W films followed by immersing into HAuCl{sub 4} aqueous 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 WS{sub 2}. We have compared the optical absorption and photoluminescence of bare WS{sub 2} and Au-decorated WS{sub 2} layers. Enhancement in the photoluminescence is observed in the Au-WS{sub 2} nano-composites, attributed to localized surface plasmonic effect. This work provides the possibility to develop photonic application in two-dimensional materials.

Authors:
; ; ; ; ; ;  [1]
  1. Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong (China)
Publication Date:
OSTI Identifier:
22493911
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 6; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION; AQUEOUS SOLUTIONS; COMPARATIVE EVALUATIONS; ELECTRON MICROSCOPY; FILMS; GOLD; LAYERS; MORPHOLOGY; NANOPARTICLES; PHOTOLUMINESCENCE; SPUTTERING; SURFACES; TUNGSTEN SULFIDES; TWO-DIMENSIONAL SYSTEMS

Citation Formats

Choi, Sin Yuk, Yip, Cho Tung, Li, Guang-Can, Lei, Dang Yuan, Fung, Kin Hung, Yu, Siu Fung, E-mail: apsfyu@polyu.edu.hk, E-mail: jh.hao@polyu.edu.hk, and Hao, Jianhua, E-mail: apsfyu@polyu.edu.hk, E-mail: jh.hao@polyu.edu.hk. Photoluminescence enhancement in few-layer WS{sub 2} films via Au nanoparticles. United States: N. p., 2015. Web. doi:10.1063/1.4923183.
Choi, Sin Yuk, Yip, Cho Tung, Li, Guang-Can, Lei, Dang Yuan, Fung, Kin Hung, Yu, Siu Fung, E-mail: apsfyu@polyu.edu.hk, E-mail: jh.hao@polyu.edu.hk, & Hao, Jianhua, E-mail: apsfyu@polyu.edu.hk, E-mail: jh.hao@polyu.edu.hk. Photoluminescence enhancement in few-layer WS{sub 2} films via Au nanoparticles. United States. doi:10.1063/1.4923183.
Choi, Sin Yuk, Yip, Cho Tung, Li, Guang-Can, Lei, Dang Yuan, Fung, Kin Hung, Yu, Siu Fung, E-mail: apsfyu@polyu.edu.hk, E-mail: jh.hao@polyu.edu.hk, and Hao, Jianhua, E-mail: apsfyu@polyu.edu.hk, E-mail: jh.hao@polyu.edu.hk. Mon . "Photoluminescence enhancement in few-layer WS{sub 2} films via Au nanoparticles". United States. doi:10.1063/1.4923183.
@article{osti_22493911,
title = {Photoluminescence enhancement in few-layer WS{sub 2} films via Au nanoparticles},
author = {Choi, Sin Yuk and Yip, Cho Tung and Li, Guang-Can and Lei, Dang Yuan and Fung, Kin Hung and Yu, Siu Fung, E-mail: apsfyu@polyu.edu.hk, E-mail: jh.hao@polyu.edu.hk and Hao, Jianhua, E-mail: apsfyu@polyu.edu.hk, E-mail: jh.hao@polyu.edu.hk},
abstractNote = {Nano-composites of two-dimensional atomic layered WS{sub 2} and Au nanoparticles (AuNPs) have been fabricated by sulfurization of sputtered W films followed by immersing into HAuCl{sub 4} aqueous 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 WS{sub 2}. We have compared the optical absorption and photoluminescence of bare WS{sub 2} and Au-decorated WS{sub 2} layers. Enhancement in the photoluminescence is observed in the Au-WS{sub 2} nano-composites, attributed to localized surface plasmonic effect. This work provides the possibility to develop photonic application in two-dimensional materials.},
doi = {10.1063/1.4923183},
journal = {AIP Advances},
number = 6,
volume = 5,
place = {United States},
year = {Mon Jun 15 00:00:00 EDT 2015},
month = {Mon Jun 15 00:00:00 EDT 2015}
}
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