Lee Jaeyeong, Min Kyungchan, Kim Youngho, Yu Hak Ki
Department of Energy Systems Research, Ajou University, Suwon 16499, Korea.
Department of Materials Science and Engineering, Ajou University, Suwon 16499, Korea.
Materials (Basel). 2019 May 14;12(10):1581. doi: 10.3390/ma12101581.
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 Å/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 SiO, sapphire, and tungsten showed straight nanorods shape and showed relatively high SERS efficiency. However, Ag deposited on graphene or plasma-treated SiO substrate was slightly or more aggregated (due to high surface energy) and showed low SERS efficiency.
研究了不同沉积速率和基底条件下银的倾斜角沉积对表面增强拉曼光谱（SERS）效率的影响。具有最大SERS效率的银基底的沉积速率被优化为2.4 Å/s。我们还分析了以相同速率沉积在各种基底上的银纳米棒的形态，并比较了它们的SERS强度。沉积在SiO、蓝宝石和钨上的银呈现出直的纳米棒形状，并表现出相对较高的SERS效率。然而，沉积在石墨烯或经等离子体处理的SiO基底上的银略有聚集或聚集更严重（由于高表面能），且SERS效率较低。
