Size and Surface Control of Optical Properties in Silicon Nanoparticles

Abstract:

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Si-nanoparticles (NP) are attracting steadily growing interest due to their intriguing sizedependent optical properties. The most challenging task in preparing Si-NP is to succeed in controlling the particle size and size distribution and the surface properties. To this respect, the method of laser synthesis of Si-NP from gas phase reactants appears as an ideal tool, being a very versatile and controllable synthesis technique, but the collected Si-NP are strongly agglomerated. Here we report on attempts to decrease the agglomeration of the Si NP by following two complementary strategies: - investigation and control of nanoparticle formation and growth during the synthesis process; - dispersion of the agglomerates and termination of the particle surfaces by controlled chemical etching followed by surface passivation and stabilization treatments. The properties of as-prepared and processed Si NP will be presented and discussed.

Info:

Periodical:

Edited by:

P. VINCENZINI

Pages:

2620-2626

DOI:

10.4028/www.scientific.net/AST.45.2620

Citation:

F. Fabbri et al., "Size and Surface Control of Optical Properties in Silicon Nanoparticles", Advances in Science and Technology, Vol. 45, pp. 2620-2626, 2006

Online since:

October 2006

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Price:

$35.00

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