Semiconductor Physics, Quantum Electronics & Optoelectronics. 2010. V. 13, N 4. P. 369-373.
https://doi.org/10.15407/spqeo13.04.369

Optical efficiency of Ag and Au nanoparticles 
N.L. Dmitruk1, S.Z. Malynych1, I.E. Moroz2, V.Yu. Kurlyak3

1V. Lashkaryov Institute of Semiconductors Physics, NAS of Ukraine, 41, prospect Nauky, 03028 Kyiv, Ukraine Phone: +38(044) 525-64-86, e-mail: s.malynych@gmail.com, dmitruk@isp.kiev.ua
2National University “Lviv Polytechnica”, 12, S. Bandery str., 79013 Lviv, Ukraine
3Ivan Franko Lviv National University, 8, Kyryla & Methodiya str., 79005 Lviv, Ukraine

Abstract. In this paper, we present the results of calculations aimed at the optical radiation efficiency of Ag and Au nanoparticles, which is defined by the ratio of the scattering cross-section to the extinction one. The calculations were performed using Mie theory formalism for surrounding medium of various refractive indexes. It has been shown that silver nanoparticles exhibit substantially larger optical efficiency in a broad spectral range as compared to gold nanoparticles. The optical efficiency for silver nanoparticles with diameters over 90 nm exceeds 90%.

Keywords: metal nanoparticles, optical properties, light scattering.

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