| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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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 |
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| Cite this article: |
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Ai-Qi Zhang , Qi-Liang Wang , Ying Gao et al 2020 Chin. Phys. Lett. 37 068102 |
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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.
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Received: 24 December 2019
Published: 26 May 2020
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| PACS: |
81.05.ug
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(Diamond)
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78.30.Am
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(Elemental semiconductors and insulators)
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81.07.-b
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(Nanoscale materials and structures: fabrication and characterization)
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| Fund: *Supported by the National Natural Science Foundation of China (Grant Nos. 51672102 and 51972135). |
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