Gold-Nanoparticles/Boron-Doped-Diamond Composites as Surface-Enhanced Raman Scattering Substrates
Ai-Qi Zhang , Qi-Liang Wang , Ying Gao , Shao-Heng Cheng** , Hong-Dong Li
State Key Lab of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
Abstract ：By vacuum sputtering and annealing processes of gold (Au) films on boron-doped diamond (BDD) surfaces, Au-nanoparticles/BDD (AuNP/BDD) composite substrates were prepared as surface-enhanced Raman scattering (SERS) substrates. The SERS performances of the substrate were investigated using methylene blue molecule as a probe. With the AuNPs having an average diameter of 20 nm, high performance of SERS was achieved at an enhancement factor of $9\times 10^{5}$, arising from the synergistic effect of electromagnetic enhancement from AuNPs and chemical enhancement from diamond. The AuNP/BDD substrate is demonstrated to be highly sensitive, reproducible, stable, and reusable for the SERS examination. Due to the facile preparation process and controllable surface morphology, the AuNP/BDD substrates are favorable as a high performance SERS platform performed in practical applications.
收稿日期: 2019-12-24
出版日期: 2020-05-26
:
81.05.ug
(Diamond)
78.30.Am
(Elemental semiconductors and insulators)
81.07.-b
(Nanoscale materials and structures: fabrication and characterization)
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2020, Vol. 37 
