ZnS-Au planet-like structure: A facile fabrication and improved optical performance induced by surface plasmon resonance

Chaoshun Yang, Guofei An, Yawei Zhou, Xiaopeng Zhao

科研成果: 期刊稿件文章同行评审

4 引用 (Scopus)

摘要

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.

源语言英语
页(从-至)633-637
页数5
期刊Applied Physics A: Materials Science and Processing
111
2
DOI
出版状态已出版 - 5月 2013

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