Capacitive structures produced by printing technology

The experiments presented here aim at achieving capacitor structures of different sizes, but fabricated with the same materials and measured under the same conditions. For printing the conductive part, the silver ink SunTronic EMD 5603 was used. For the dielectric poly-4-vinylphenol (PVP - is a water soluble polymer) was used. The aim was to obtain a structure of two capacitors, in series, on flexible substrate. Printed routes are arranged in the shape of a pyramid, from small to large, so that connections to PVP cannot join. After printing each layer, the structure was subjected to heat treatment to evaporate solvents from inks and for fixing the layers. The measured capacity, from these structures, of the devices ranges from 560 pF to 3nF.