Investigating Parameters Influencing Deposition Current Density of Zns:Ag Thick Films Via Direct Current Electrophoresis

Author

Department of Nanomaterials and Nanocoatings, Institute for Color Science and Technology

Abstract

In this work, silver-doped zinc sulfide (ZnS:Ag) has been coated on the indium tin oxide (ITO) glass via direct current electrophoretic deposition (DC-EPD). Experiments showed that the current density is the most important parameter during the coating process and it should be in the range of 0.11-0.22 mA/cm2 not only preventing ITO from damaging, but also achieving a high quality coating. Three different parameters most affecting the current density, i.e. the additive, storage time and the cathode to anode ratio have been investigated. Investigations showed that in comparison with the solvent and the powder, additive has the most influence on the deposition current density. The current density also initially increases with the storage time and then becomes rather stable at longer times. Decreasing the cathode to anode ratio increases the current density, hence the deposit yield.

Keywords