Abstract:  This study investigates the response of thin-film silicon solar cells to the use of core-shell metal-dielectric nanoparticles embedded inside the Silicon (Si) substrate to enhance their performance. Multiple arrays of these particles were placed inside the silicon substrate at three different depths to observe the changes in the performance of thin-film silicon solar cells. The absorption of the incident sunlight, the short circuit current density, open circuit voltage, fill factor and the output power generated from solar cell structure due to these embedded nanoparticles have been analyzed It has been observed that the solar cells with the embedded core-shell nanoparticles show larger values than the bare silicon substrate in terms of the short circuit current generated, the fill-factor, open circuit voltage and the output power generated Furthermore, the Fabry-Perot effect has also been observed for core-shell nanoparticles embedded inside the silicon substrate that can have many useful applications if utilized in appropriate conditions.