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

doi:10.1063/1.4923183

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 publication › Journal article › Academic research › peer-review

26 Citations (Scopus)

Abstract

ï¿½ 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 language	English
Article number	067148
Journal	AIP Advances
Volume	5
Issue number	6
DOIs	https://doi.org/10.1063/1.4923183
Publication status	Published - 1 Jan 2015

ASJC Scopus subject areas

General Physics and Astronomy

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10.1063/1.4923183

http://hdl.handle.net/10397/35701

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title = "Photoluminescence enhancement in few-layer WS2films via Au nanoparticles",

abstract = "{\"i}¿½ 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.",

author = "Choi, {Sin Yuk} and Yip, {Cho Tung} and Li, {Guang Can} and Dangyuan Lei and Fung, {Kin Hung} and Yu, {Siu Fung} and Jianhua Hao",

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T1 - Photoluminescence enhancement in few-layer WS2films via Au nanoparticles

AU - Choi, Sin Yuk

AU - Yip, Cho Tung

AU - Li, Guang Can

AU - Lei, Dangyuan

AU - Fung, Kin Hung

AU - Yu, Siu Fung

AU - Hao, Jianhua

PY - 2015/1/1

Y1 - 2015/1/1

N2 - ï¿½ 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.

AB - ï¿½ 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.

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DO - 10.1063/1.4923183

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VL - 5

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JF - AIP Advances

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ER -

Photoluminescence enhancement in few-layer WS₂films via Au nanoparticles

Abstract

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