Efficiency improvement of perovskite solar cell by modifying structural parameters and using Ag nanoparticles

Despite a significant growth in their efficiency in the last decade, perovskite solar cells suffer from low absorption power in the infrared range which forms a wide range of the solar spectrum. To find solutions to improve the performance of solar panels and the efficiency of their absorption, this research examined the effects of using nanostructures and plasmonic nanoparticles for modification of perovskite solar cells' active layer to create a wider absorption spectrum. For this purpose, the effects of different factors, such as the composition, radius and location of plasmonic nanoparticles on light absorption, open-circuit voltage, short-circuit current density and power conversion efficiency (PCE), were considered. Silver spherical nanoparticles were selected to be placed in the absorbent layer because of their low loss and high absorption power. By selection of optimum size, radius and position of nanoparticles and the location of metallic nanoparticles inside the transporting layers of the carrier, an improvement in the absorption and a 43% increase in the PCE of the perovskite solar cell were achieved.