Document Type : Research
Author
. Department of Basic Sciences, Garmsar Branch, Islamic Azad University, Garmsar, Iran
Abstract
In this work, a lead-free double perovskite solar cell has been investigated and the effect of a periodic array of spherical Au nanoparticles coated with Silica (Au@SiO2) and Titania (Au@TiO2) nanorod has been studied and compared to the effect of bare Au nanoparticles. We propose a p-i-n perovskite solar cell with architecture ITO/PEDOT:PSS/Cs2AgBiBr6/Tio2/Ag. In this study, three-dimensional Finite-difference Time-domain method utilizing FDTD module of Ansys-Lumerical software has been used and the wavelength range is from ultraviolet , 300nm to near-infrared (NIR), 1100 nm. The effect of these nanoparticles on light absorption, electric field intensity, short-circuit current density, generation rate, and current from the simulation device has been investigated. The results show that the effect of Au@TiO2 on the efficiency enhancement of solar cells is higher than other nanoparticles. In addition, the current from the simulation device increases by 17.8%, short-circuit current density is enhanced by 17.85% , and the maximum generation rate grows 100 times . This result is due to the plasmonic near-field of nanoparticles and light scattering from them. Moreover, the place of Au@SiO2 periodic array has been changed and the effect of nanoparticles’ location inside the perovskite layer has been investigated.
Keywords
)