Abstract
Gold-capped silicon nanocolumns regularly distributed over silicon substrate were obtained. The columns length was roughly 100 nm; their deviation from perpendicular axis was less than 2°. The diameter of the columns was of the order of 10 nm or below of that. The proposed procedure of nanostructuring included the following main steps: deposition of aluminum thin layer (100–500 nm) by magnetron sputtering on (100) oriented Si wafers; formation of porous self-ordered alumina structures by electrochemical anodizing of the Al film in oxalic acid; electroless inversion of Au in alumina pores; and reactive ion etching. The obtained Si–Au structures are of importance as the platforms for biosensing applications, while the gold-free structures are of interest in photovoltaics.
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The study was supported by the Lithuanian State Science and Studies Foundation (Contract No. AUT-18/2010).
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This paper is dedicated to the 65th birthday of Professor G. Inzelt.
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Leinartas, K., Miečinskas, P., Selskis, A. et al. Formation of gold-capped silicon nanocolumns on silicon substrate. J Solid State Electrochem 15, 2419–2425 (2011). https://doi.org/10.1007/s10008-011-1442-4
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DOI: https://doi.org/10.1007/s10008-011-1442-4