Low‐Frequency Electrophoretic Deposition of ZnO Nanoparticles: Effect of Organic Medium on Deposition Pattern

Abstract

In present study, using coplanar gold electrodes, the effect of two organic media, acetone and isopropanol, on the low‐frequency electrophoretic deposition pattern of ZnO nanoparticles at 1 Hz was investigated. Optical and scanning electron microscopy indicate the formation of microcracks across the layer deposited in acetone. In contrast, the alternating electrophoretic deposition of ZnO nanoparticles from an isopropanol‐based suspension lead to the formation of a uniform deposit connecting the two electrode edges. This evident difference in deposition pattern was attributed to suspension parameters such as viscosity, conductivity, particle size distribution, and diffusion coefficient.