Zinc oxide (zinc oxide, ZnO) is one of the main components of perovskite solar cells (PSC), namely electron transport material (ETM). Improvement of perovskit solar performance can be achieved by modifying the electrical and optical properties of its ETM by doping from other elements. In this research, seleniumdoped ZnO (Se-ZnO) thin film has been fabricated onto fluorine-doped tin oxide (…