Electrodeposition of hierarchical Ag nanostructures on ITO glass for reproducible and sensitive SERS application

► Relatively uniform hierarchical Ag nanostructures were electrodeposited on ITO glass. ► The size RSD of the hierarchical Ag nanostructures is about 28.8%. ► A low precursor concentration and complexing agent were used. ► The RSD of SERS intensity (rhodamine 6G, R6G) for 1651 cm−1 band is about 14.9%. ► The detectable concentration of R6G can be 10−10 M at least.