Surface-Enhanced Raman Spectroscopy (SERS) Study Using Oblique Angle Deposition of Ag Using Different Substrates

被引：18
作者：
Lee, Jaeyeong [1 ,2 ]
Min, Kyungchan [1 ]
Kim, Youngho [1 ,2 ]
Yu, Hak Ki [1 ,2 ]
机构：
[1] Ajou Univ, Dept Energy Syst Res, Suwon 16499, South Korea
[2] Ajou Univ, Dept Mat Sci & Engn, Suwon 16499, South Korea
来源：
MATERIALS | 2019年 / 12卷 / 10期
基金：
新加坡国家研究基金会;
关键词：
oblique deposition; SERS; Ag nanogap; NANOROD ARRAYS; SILVER DENDRITES; THIN-FILMS; SCATTERING; SENSITIVITY; OXIDE;
D O I：
10.3390/ma12101581
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The oblique angle deposition of Ag with different deposition rates and substrates was studied for surface-enhanced Raman spectroscopy (SERS) efficiency. The deposition rate for the Ag substrate with maximum SERS efficiency was optimized to 2.4 angstrom/s. We also analyzed the morphology of Ag nanorods deposited at the same rate on various substrates and compared their SERS intensities. Ag deposited on SiO2, sapphire, and tungsten showed straight nanorods shape and showed relatively high SERS efficiency. However, Ag deposited on graphene or plasma-treated SiO2 substrate was slightly or more aggregated (due to high surface energy) and showed low SERS efficiency.
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页数：9
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