Semiconductor Physics, Quantum Electronics & Optoelectronics. 2009. V. 12, N 4. P. 315-320.
https://doi.org/10.15407/spqeo12.04.315

Local plasmons contribution into photocurrent of Au/GaAs surface barrier structure with Au nanoparticles on interface
S. Mamykin1, N. Dmitruk1, A. Korovin1, D. Naumenko1, A. Dmytruk2, Yeon-Su Park2,3

1V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 41, prospect Nauky, 03028 Kyiv, Ukraine
2Center for Interdisciplinary Research, Tohoku University, Sendai 9808578, Japan
3Graduate School Engineering, Nagoya University, Nagoya 4648601, Japan Corresponding author e-mail: mamykin@isp.kiev.ua

Abstract. Au/SiO 2 core-shell nanoparticles have been used to increase the photocurrent in the surface barrier structure Au/GaAs. The method for theoretical calculation of interaction between light and the system of ordered nanoparticles placed on the surface barrier structures has been proposed. Local plasmons excited in the nanoparticles produce additional carriers due to scattering, prolonged interaction with semiconductor and enhanced evanescent electromagnetic field, thus they increase the photocurrent.

Keywords: Au nanoparticles, photocurrent enhancement, plasmonic solar cells.

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