Abstract
The photovoltaic properties of perovskite solar cells (PSCs) were investigated by adding graphene oxide (GO) to the electron transport layer of TiO₂. The PSCs were fabricated with a glass/FTO/BL-TiO₂/meso-TiO₂ + GO/perovskite/HTL/Au electrode structure by adding various contents of GO (0.0, 0.3, 0.5 and 0.7 wt%) to the TiO₂ layer. To..... More