Enhancing effect of silver nanoparticles (AgNPs) interfacial thin layer on silicon nanowires (SiNWs)/PEDOT: PSS hybrid solar cell

Abstract

Throughout a red wire associated with organic–inorganic hybrid solar cells, the recombination mechanism at the interface is a major problem for better low-cost photovoltaic efficiency. The photovoltaic parameters of hybrid silicon nanowires (SiNWs)/poly (3, 4-ethylenedioxy-thiophene): poly (styrenesulfonate) (PEDOT: PSS) can be advanced to new stages by modifying the interface properties between SiNWs arrays and PEDOT: PSS. In this context, we have interposed a layer of silver nanoparticles AgNPs between SiNWs and PEDOT: PSS. The repercussions of the shape and size of AgNPs on the reflectance and efficiency of hybrid devices have been estimated experimentally. The power conversion efficiency (PCE) was reached a record of about 8.96%, following the insertion of two layers of AgNPs deposited by spin coating. The optimization of the thickness of AgNPs made it possible to obtain the best yield, multiplied by 2 ~ 3 of magnitude compared to a solar cell without intermediate layer. Results found stipulate that with the existence of AgNPs, the series resistance Rs decreases and increased therefore the short-circuit current density.