Dewetting Behavior of PS-ZnO Thin Film Coated on Ultrathin Au Layer Grown on Si Substrate

Electronic packaging by coating device component surfaces with polymer thin film is an important step to protect the components from harsh environments. However, along miniaturization improve its performance, scaling down can cause a decrease in durability. Therefore, thermal stability of pure polystyrene (PS) and zinc oxide-incorporated (PS-ZnO) nano-thin films coated on gold (Au) layer different nano thicknesses Si substrate were examined determine smallest Au thickness at which would exhibit optimal stability, investigate effects resistance dewetting. With requirement having transparent conductive electrode, 20 nm was identified as value for both PS PS-ZnO could withstand environment temperatures 150oC up few hours while exhibited outstanding over 10 days. Such excellent durability ascribed physio-chemical framework experience forces layers potentially affect mobility chains. Considering increase content roughness increasing realizing similar surface adhesion these layers, several possible influences material matrix discussed. The findings provide insight into heat-resistant coatings grown Si, may also be benefit design understanding relevant electronic protection functional polymeric coatings.