A comparison between different structures of perovskite nanorod solar cells

Perovskite is considered a very promising material in solar energy harvesting. Combining the advantages of Perovskite material and nanorod structure, Perovskite nanorod solar cell (PNSC) is believed to achieve a high conversion efficiency with low cost and simple fabrication processes. The rapid increasing efficiency of fabricated PNSC increases the demand for an efficient and accurate modeling that can simulate the parameters performance of the cell and estimate the important outputs. In this work, we simulate different structures of Perovskite nanorod solar cells namely; cylindrical rod, cone rod, inverted-cone rod, and modulated rod. The simulation is based on the finite element method. The material of the modeled cell is TiO2/CH3NH3PbI3 and we optimize the rod length, radius and spacing between rods for all structures to achieve the maximum conversion efficiency. The best efficiency is 18.6% for a cell of cylindrical rod of rod length, rod radius and rods spacing equal 400 nm, 5 nm and 65 nm, respectively.