“…The doped SnO 2 , due to its wide band gap (3.67 eV), high optical transmittance in the visible range and good substrate adherence, has many potential applications such as gas sensors [6], solar energy conversion [7], infrared-reflecting glass [8], antistatic coatings [9] and transparent electrode preparation [10,11]. F [12], Sb [13], Ni [14], Co [15], Mn [16], etc., have been used as dopants for SnO 2 . Fluorine-doped tin dioxide (FTO), in which fluorine atoms replace the oxygen sites in the lattice creating free electrons to promote higher conductivity in the samples [17], is an n-type transparent conducting oxide (TCO).…”