Direct Quantification of Gold along a Single Si Nanowire
Nano Letters2008Vol. 8(11), pp. 3709–3714
Citations Over TimeTop 10% of 2008 papers
Aude Bailly, O. Renault, N. Barrett, Luiz Fernando Zagonel, P. Gentile, N. Pauc, F. Dhalluin, T. Baron, Amal Chabli, J. C. Cezar, N. B. Brookes
Abstract
The presence of gold on the sidewall of a tapered, single silicon nanowire is directly quantified from core-level nanospectra using energy-filtered photoelectron emission microscopy. The uniform island-type partial coverage of gold determined as 0.42+/-0.06 (approximately 1.8 ML) is in quantitative agreement with the diameter reduction of the gold catalyst observed by scanning electron microscopy and is confirmed by a splitting of the photothresholds collected from the sidewall, from which characteristic local work functions are extracted using a model of the full secondary electron distributions.
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