Open AccessControlled-layer and large-area MoS_2 films encapsulated Au nanoparticle hybrids for SERS
Author(s) -
Zhen Li,
Shouzhen Jiang,
Yanyan Huo,
Mei Liu,
Cheng Yang,
Chao Zhang,
Xiaoyun Liu,
Yingqing Sheng,
Chonghui Li,
Baoyuan Man
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.026097
Subject(s) - materials science , monolayer , rhodamine 6g , raman spectroscopy , high resolution transmission electron microscopy , crystal violet , layer (electronics) , nanoparticle , nanotechnology , surface enhanced raman spectroscopy , optoelectronics , raman scattering , chemical engineering , molecule , optics , transmission electron microscopy , chemistry , organic chemistry , medicine , physics , pathology , engineering
In this work, a facile and effective method for controlled-layer and large-area MoS 2 films encapsulated Au nanoparticle hybrids is developed. With accurate Ar plasma treatment time control, the large-area MoS 2 layers can be obtained from monolayer to trilayer. The fabricated MoS 2 @Au NPs with higher surface area exhibit excellent Raman enhanced effect for aromatic organic molecules (rhodamine 6G and crystal violet) and achieve the best when the monolayer MoS 2 @AuNPs was obtained. The limit of detection is found to be as low as 1 × 10 -10 M. The MoS 2 @AuNPs was characterized by SEM, EDS, AFM, Raman spectroscopy, UV-Vis, XRD and HRTEM.