Modeling and design of core-shell p-n junction Si nanorod solar cell with pyramidal structure

Abstract

In recent year's nano material has been considered as a technology booster for solar photovoltaic cell. Si nanorod solar cells have not only shown an improvement in the device performance but are also compatible with the existing silicon process technology. In this work, we have developed a new device model for radial p-n junction silicon nanorod solar cell with a pyramidal structure between two nanorods. Efficiency of cell is studied by changing the different cell parameters and a nonlinear variation is obtained in most of the cases. Efficiency increases when length, reflectivity and angle of inclination increase. When the D/P ratio of the nanorod increases, efficiency increases initially and after some particular value it saturates. Simulation result shows that maximum efficiency of 21% is obtained at fixed length of 10 μm and for the angle of inclination of 100.