Efficiency enhancement of perovskite solar cell by modifying the TiO ₂ with Ag/TiO ₂ core–shell nanowires

Abstract

Different ratio incorporation of Ag/TiO 2 core–shell nanowires (ATCSN) into TiO 2 as an electron transport layer of perovskite solar cells (PSCs) is studied. This structure can prevent the formation of silver halides between perovskite and silver nanowire. It is found that because of the effective improvement of light absorption and separation of photo‐generated electron–hole pairs, the introduction of ATCSN leads to increase of short current density and photoelectric conversion efficiency (PCE) of PSCs. 20 mg incorporation of ATCSN PSCs exhibits the best performance of PCE and a 17.7% increase is achieved compared to the control sample.