TY - JOUR
T1 - ZnS-Au planet-like structure
T2 - A facile fabrication and improved optical performance induced by surface plasmon resonance
AU - Yang, Chaoshun
AU - An, Guofei
AU - Zhou, Yawei
AU - Zhao, Xiaopeng
PY - 2013/5
Y1 - 2013/5
N2 - Semiconductor-metal planet-like structure composed of ZnS crystals and Au nanoparticles (NPs) were successfully synthesized using a simple method. The external surface of ZnS was pre-modified with sodium dodecyl sulfate (SDS). With the assistance of this anionic surfactant, Au NPs could be deposited onto the surface of ZnS crystals via electrostatic adsorption. The samples were structurally characterized by X-ray diffraction, Fourier transform infrared, and transmission electron microscope. It was shown that all samples were made up of face-centered cubic Au and wurtzite ZnS. In this structure, the surface coverage of Au NPs could be readily adjusted by varying the Au/ZnS ratio during the synthesis. Photoluminescence results showed that the defect emission intensity of the ZnS-Au planet-like structure improved by 20 % at the Au/ZnS molar ratio of 1:588, with the Au NPs measuring 12 nm in diameter. This enhancement can be primarily ascribed to localized surface plasmon resonance on the surface of the Au NPs.
AB - Semiconductor-metal planet-like structure composed of ZnS crystals and Au nanoparticles (NPs) were successfully synthesized using a simple method. The external surface of ZnS was pre-modified with sodium dodecyl sulfate (SDS). With the assistance of this anionic surfactant, Au NPs could be deposited onto the surface of ZnS crystals via electrostatic adsorption. The samples were structurally characterized by X-ray diffraction, Fourier transform infrared, and transmission electron microscope. It was shown that all samples were made up of face-centered cubic Au and wurtzite ZnS. In this structure, the surface coverage of Au NPs could be readily adjusted by varying the Au/ZnS ratio during the synthesis. Photoluminescence results showed that the defect emission intensity of the ZnS-Au planet-like structure improved by 20 % at the Au/ZnS molar ratio of 1:588, with the Au NPs measuring 12 nm in diameter. This enhancement can be primarily ascribed to localized surface plasmon resonance on the surface of the Au NPs.
UR - http://www.scopus.com/inward/record.url?scp=84878122669&partnerID=8YFLogxK
U2 - 10.1007/s00339-012-7277-8
DO - 10.1007/s00339-012-7277-8
M3 - 文章
AN - SCOPUS:84878122669
SN - 0947-8396
VL - 111
SP - 633
EP - 637
JO - Applied Physics A: Materials Science and Processing
JF - Applied Physics A: Materials Science and Processing
IS - 2
ER -