Optical Properties of Surface Metal-Dielectric Composites Based on Si and SiO2

Authors O.S. Kondratenko1, V.R. Romanyuk1, N.L. Dmitruk1, M.B. Pinkovska2

1 Institute for Physics of Semiconductors NAS of Ukraine, 41, prospect Nauky, 03680 Kyiv, Ukraine

2 Institute for Nuclear Research NAS of Ukraine, 47, prospect Nauky, 03680 Kyiv, Ukraine

Е-mail kondratenko@isp.kiev.ua
Issue Volume 10, Year 2018, Number 1
Dates Received 20 October 2017, revised manuscript received 13 November 2017, published online 24 February 2018
Citation O.S. Kondratenko, V.R. Romanyuk, J. Nano- Electron. Phys. 10 No 1, 01018 (2018)
DOI 10.21272/jnep.10(1).01018
PACS Number(s) 78.67. – n, 81.07. – b, 81.70.Fy
Keywords Surface composite, Porous matrix, Nanoparticles (70) , Surface plasmons, Optical properties (22) .

The optical properties of surface  «metal-insulator (semiconductor)»  composites fabricated by deposition of plasmon-active gold nanoparticles onto a modified rough surface of silicon or into a porous SiO2  layer on the Si surface are investigated. Microscopic studies detected features of the topology of the distribution of Au nanoparticles depending on the type of surface and the parameters of thermal annealing. Excitations of surface plasmons are found and the possibility of controllable changing the optical parameters of composites during the deposition of Au nanoparticles into a porous matrix and additional thermal annealing by the methods of reflection spectroscopy and spectroscopic ellipsometry are shown. The analyses of optical and structural parameters of composites in the framework of the Bruggeman effective medium approximation as well as optical models of such heterostructures are considered.

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