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3C-SiC layers (7 and 15 μm thick), epitaxially grown on silicon, were covered with gold nanoparticles by immersion in a solution containing HF and KAuCl4. The surface of the layers played a crucial role in the morphology of the deposited metal network and large gold agglomerates developed on the pronounced antiphase domain boundaries of the thinner layer. Preferential growth was not observed on the smooth surface of the 15 μm thick layer. Rutherford backscattering spectrometry and electron microscopy outlined a progressive nucleation that takes place for less than 60 s immersion times under a kinetic control process. For longer deposition time each cluster grows under a diffusion control process, resulting in flower-like gold particles. However, the nucleation and growth processes can be strongly modified by multiple immersions in solution after rinsing in water. The adopted procedure allows the tailoring of …
American Chemical Society
Publication date: 
2 Mar 2017

Rachela G Milazzo, Stefania Privitera, Grazia Litrico, Silvia Scalese, Salvatore Mirabella, Francesco La Via, Salvatore Lombardo, Emanuele Rimini

Biblio References: 
Volume: 121 Issue: 8 Pages: 4304-4311
The Journal of Physical Chemistry C