Filling high-aspect-ratio trenches with gold is a frequent requirement in the fabrication of X-ray optics as well as micro-electronic components and other fabrication processes. Conformal electrodeposition of gold in sub-micron-width silicon trenches with an aspect ratio greater than 35 over a grating area of several square centimeters is challenging and has not been described in the literature previously. A comparison of pulsed plating and constant current plating led to a gold electroplating protocol that reliably filled trenches for such structures.
CITATION STYLE
Znati, S., Chedid, N., Miao, H., Chen, L., Bennett, E. E., & Wen, H. (2015). Electrodeposition of Gold to Conformally Fill High-Aspect-Ratio Nanometric Silicon Grating Trenches: A Comparison of Pulsed and Direct Current Protocols. Journal of Surface Engineered Materials and Advanced Technology, 05(04), 207–213. https://doi.org/10.4236/jsemat.2015.54022
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