Improvement on relative permittivity of inkjet-printed BaTiO ₃-resin hybrid film by manipulating ceramic powder size-distribution

BaTiO ₃-resin hybrid composite is one of the most promising candidates for the embedded capacitors. We utilized the inkjet printing to prepare BaTiO ₃-resin hybrid film. In order to extract the maximum relative permittivity from the hybrid films, the following aspects were investigated: (1) the effect of BaTiO ₃ powder size on the relative permittivity of inkjet-printed films and (2) the improvement of the packing density by using two different sizes of BaTiO ₃ powders resulting in the increase in relative permittivity. The microstructures of the films were investigated to confirm the improvement on the packing density and their effects on the relative permittivity.