Abstract This paper reports on a facile low-cost electroless deposition method with a short reaction time to directly fabricate Ag nanosheets onto a silicon substrate. Silver nitrate, hydrofluoric acid, and trisodium citrate were used as a silver source, etchant, and capping reagent by a wet chemical approach. The surface morphology of the Ag nanostructures could be controlled by adjusting the difference of reaction conditions (such as concentrations of hydrofluoric acid and trisodium citrate, reaction time). Ag nanosheets provide high corners, anisotropy, and hot spots for enhancing localized surface plasmon resonance with higher surface-enhanced Raman scattering enhancement and lower detection limits, which shall be beneficial in SERS-based chemical sensing.

中文翻译：

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用于高性能 SERS 传感的硅衬底上 Ag 纳米片的简便自沉积

摘要 本文报道了一种简便、低成本、反应时间短的无电沉积方法，可直接在硅基板上制造银纳米片。通过湿化学方法将硝酸银、氢氟酸和柠檬酸三钠用作银源、蚀刻剂和封端剂。Ag纳米结构的表面形貌可以通过调节反应条件的差异（如氢氟酸和柠檬酸三钠的浓度、反应时间）来控制。银纳米片提供高角、各向异性和热点，用于增强局部表面等离子体共振，具有更高的表面增强拉曼散射增强和更低的检测限，这将有利于基于 SERS 的化学传感。