Perovskite solar cell improvement by gold nanoparticles prepared by laser ablation in liquid

Improving performance of lead halide perovskites solar cells (PSC) by nanoparticles (NPs) with localized surface-plasmon resonances is one of the most actively developing direction in modern photovoltaics. For this purpose, we propose to use simple and cheap way for NPs fabrication based on laser ablation of gold target in liquid, which can be added in any layer of PSC. By using these NPs we improve CH3NH3PbI3 (MAPbI(3)) perovskite-based solar cells performance from 17.7 to 18.6% via the increase of fill factor and voltage at zero current. The chosen concentration of Au NPs in the devices does not raise parasitic absorption, whereas the external quantum efficiency grows in all working distance of PCS. The proposed method can be simply implemented for PSCs with various compositions and architectures.