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7 June 2005 Optical properties of multishelled amorphous silicon nanoparticles
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Proceedings Volume 5850, Advanced Laser Technologies 2004; (2005) https://doi.org/10.1117/12.633714
Event: Advanced Laser Technologies 2004, 2004, Rome and Frascati, Italy
Abstract
Adsorbed metal on the semiconductor surface change strongly the optical properties of the interface due to the charge distribution. This effect is more important for nanoparticles. In this paper we present the experimental results and analysis of amorphous silicon nanoparticles (a-n-Si) covered by the different metal layers. The optical properties of individual particles of a-n-Si dressed by the silver, copper and iron and imbedded in water have been studied. In spite of the thickness of metal films was more less than 1 nm for the nanoparticles diameter more than 20 nanometers the optical absorption spectra for each nanocomposites measured in the spectral range from 300 to 900nm differs much one from another. The reason is it depends on the surrounding media, mainly, but not on the particles microstructure. This character of optical absorption in the visible range is defined by the double charge layer near the surface inside of the particles. The mechanism of the optical absorption is the composition of absorption by the surface electrons plasma waves and valence electron in strong static electric field created by double charge layer.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Korovin, S. Vasil'chenko, V. E. Ogluzdin, and V. Pustovoi "Optical properties of multishelled amorphous silicon nanoparticles", Proc. SPIE 5850, Advanced Laser Technologies 2004, (7 June 2005); https://doi.org/10.1117/12.633714
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