Raman analysis of gold on WSe2 single crystal film

被引：24

作者：

Mukherjee, Bablu ^{[1
,2
]}

Leong, Wei Sun ^{[1
]}

Li, Yida ^{[1
]}

Gong, Hao ^{[3
]}

Sun, Linfeng ^{[4
]}

Shen, Ze Xiang ^{[4
]}

Simsek, Ergun ^{[2
]}

Thong, John T. L. ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117583, Singapore

[2] George Washington Univ, Sch Engn & Appl Sci, Dept Elect & Comp Engn, Washington, DC 20052 USA

[3] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117575, Singapore

[4] Nanyang Technol Univ, Sch Phys & Math Sci, Ctr Disrupt Photon Technol, Singapore 637371, Singapore

来源：

MATERIALS RESEARCH EXPRESS | 2015年 / 2卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

tungsten diselenide; transition metal dichalcogenides; Au nanoparticles; two-dimensional materials; LAYERS; MOS2;

D O I：

10.1088/2053-1591/2/6/065009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Synthesis and characterization of high-quality single-crystal tungsten diselenide (WSe2) films on a highly insulating substrate is presented. We demonstrate for the first time that the presence of gold (Au) nanoparticles in the basal plane of a WSe2 film can enhance its Raman scattering intensity. The experimentally observed enhancement ratio in the Raman signal correlates well with the simulated electric field intensity using both three-dimensional electromagnetic software and theoretical calculation considering layered medium coupled-dipole approximation (LM-CDA). This work serves as a guideline for the use of Au nanoparticles on WSe2 single-crystal thin films for surface enhanced Raman scattering (SERS) applications in the future.

引用

页数：7

共 22 条

[1]

[Anonymous], 2D MAT

[2] Encapsulation of Au Nanoparticles on a Silicon Wafer During Thermal Oxidation [J].

Bowker, M. ;

Crouch, J. J. ;

Carley, A. F. ;

Davies, P. R. ;

Morgan, D. J. ;

Lalev, G. ;

Dimov, S. ;

Pham, D. -T. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (41) :21577-21582

[3] P3HT Nanopillars for Organic Photovoltaic Devices Nanoimprinted by AAO Templates [J].

Chen, Dian ;

Zhao, Wei ;

Russell, Thomas P. .

ACS NANO, 2012, 6 (02) :1479-1485

[4] WSe2 field effect transistors with enhanced ambipolar characteristics [J].

Das, Saptarshi ;

Appenzeller, Joerg .

APPLIED PHYSICS LETTERS, 2013, 103 (10)

[5] First principles study of structural, vibrational and electronic properties of graphene-like MX2 (M=Mo, Nb, W, Ta; X=S, Se, Te) monolayers [J].

Ding, Yi ;

Wang, Yanli ;

Ni, Jun ;

Shi, Lin ;

Shi, Siqi ;

Tang, Weihua .

PHYSICA B-CONDENSED MATTER, 2011, 406 (11) :2254-2260

[6] Large-Area Synthesis of Highly Crystalline WSe2 Mono layers and Device Applications [J].

Huang, Jing-Kai ;

Pu, Jiang ;

Hsu, Chang-Lung ;

Chiu, Ming-Hui ;

Juang, Zhen-Yu ;

Chang, Yung-Huang ;

Chang, Wen-Hao ;

Iwasa, Yoshihiro ;

Takenobu, Taishi ;

Li, Lain-Jong .

ACS NANO, 2014, 8 (01) :923-930

[7]

Jones AM, 2013, NAT NANOTECHNOL, V8, P634, DOI [10.1038/NNANO.2013.151, 10.1038/nnano.2013.151]

[8] Systematic study of the dolomite (104) surface by bimodal dynamic force microscopy in ultra-high vacuum [J].

Kawai, Shigeki ;

Pina, Carlos M. ;

Bubendorf, Alexander ;

Fessler, Gregor ;

Glatzel, Thilo ;

Gnecco, Enrico ;

Meyer, Ernst .

NANOTECHNOLOGY, 2013, 24 (05)

[9] Low Resistance Metal Contacts to MoS2 Devices with Nickel-Etched-Graphene Electrodes [J].

Leong, Wei Sun ;

Luo, Xin ;

Li, Yida ;

Khoo, Khoong Hong ;

Quek, Su Ying ;

Thong, John T. L. .

ACS NANO, 2015, 9 (01) :869-877

[10] What Does Annealing Do to Metal-Graphene Contacts? [J].

Leong, Wei Sun ;

Nai, Chang Tai ;

Thong, John T. L. .

NANO LETTERS, 2014, 14 (07) :3840-3847

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