Influence of solution concentration towards electrical properties of Zn0/Mg0 films using immersion method

ZnO/MgO thin films were deposited on a glass substrate. In ZnO solution, zinc acetate dehydrate was used as the precursor while 2-methoxylethanol and monoethanolamine were used as the solvent and stabilizer respectively. The magnesium oxide solution was prepared using sodium chloride, magnesium nitrate and de-ionized water. The molarities of this solution were 0.2 M, 0.4 M, 0.6 M, 0.8 M and 1.0 M. The electrical property of multilayer ZnO/MgO thin films prepared by immersion method was investigated using two point probe I-V measurement (Bukoh Keiki) while the structural behavior was examined using surface profiler (KL-Tenco) and Atomic Force Microscopy (AFM). The electrical measurement shows that the resistivity increases, while the conductivity decreases as the molarity concentration increases. The highest resistivity at 6.68 x 10⁵ Ω.cm and the lowest conductivity about 1.50µ
S/cm have been obtained at for 1.0M solution.