Semiconductor Physics, Quantum Electronics & Optoelectronics. 2013. V. 16, N 3. P. 240-245.
DOI: https://doi.org/10.15407/spqeo16.03.240/

Wannier–Stark electro-optical effect and photonic modes in 2D macroporous silicon structures with SiO2 nanocoatings
L. Karachevtseva*, Yu. Goltviansky, O. Kolesnyk, O. Lytvynenko and O. Stronska

V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 45, prospect Nauky, 03028 Kyiv, Ukraine Phone: +38 (044) 525-2309; e-mail*: lakar@isp.kiev.ua

Abstract. We have investigated the IR light absorption oscillations in 2D macroporous silicon structures with SiO2 nanocoatings, taking into account the Wannier–Stark electro-optical effect caused by a strong electric field on the Si-SiO2 boundary and an additional electric field of quasi-guided optical modes. The photonic modes and band gaps were also considered as peculiarities in absorbance spectra of macroporous silicon structures with a thick SiO2 nanocoating. The photonic modes do not coincide with the quasi-guided modes in the silicon matrix.

Keywords: macroporous silicon, Wannier–Stark effect, photonic mode.

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