Silver Nanowires for Plasmon Induced Enhancement of Optical Absorption in Thin-Film Silicon Solar Cells

摘要

Plasmonic effects induced by silver nanocylinders embedded at rear side of a thin crystalline silicon (Si) substrate are reported. Numerical simulations were performed on a 3 × 3 nanowire array by means of 3D FDTD method. Absorption, scattering and extinction cross sections are calculated, and space distribution of absorbed power densities is computed. Up to 100 times enhanced absorbed power on nearly 70 % of the Si substrate is observed for a particular nanowire arangement. First experimental attempts devoted to fabrication of the simulated structures are also reported here.