“…Compared to the more widely used indium tin oxide (ITO), SnO 2 films are inexpensive, chemically stable in acidic and basic solutions, thermally stable in oxidizing environments at high temperatures, and also mechanically strong, which are important attributes for the fabrication and operation of solar cells. Many dopants, such as antimony (Sb), arsenic (As), phosphorus (P), indium (In), molybdenum (Mo), fluorine (F), and chlorine (Cl), have been studied to improve the electrical and optical properties of SnO 2 films [5][6][7][8][9][10][11]. Among these, Sb and F are found to be the most commonly used dopants for photovoltaic devices in terms of a manufacturing point of view.…”