Optical characteristics of structures with silicon nanowires and metal nanoparticles

  • O. Havryliuk
  • O. Tkachuk
  • M. Terebinska
  • O. Semchuk
  • A. Biliuk
Keywords: rough nanowire, cylindrical nanowire, finite-difference time-domain method, optical spectra, metal nanoparticle


To calculate the optical parameters, the finite difference method in the time domain (FDTD) was used, which can be applied to solve Maxwell’s equations. A large number of combinations of a planar structure with metal nanoparticles and a structure with nanowires and metal nanoparticles (NPs) were calculated. The height of nanowires h varied from 50 to 3000 nm, the period of the structure P was 100–600 nm, and the diameter of metal nanoparticles d was 50–400 nm. The reduction of light reflection was determined by the anti-reflection effect of the Si-NWs array itself and the direct scattering effect of metal nanoparticles. It was shown that all structures gave significantly lower reflection coefficients compared to that of a solid silicon plate.

Condensed Matter Physics and Technology