Inkjet printing is widely being researched as enablingudtechnology for printed electronics; however, there are scarceudpublications concerning the reliability of inkjet-printedudstructures on different substrates. The reliability of suchudstructures under high humidity and high temperatureudconditions is treated in this work. To do so, the adhesion andudresistivity of printed structures on PET, Rogers, PI and FR-4udmaterials are studied before and after a moisture resistanceudtest. The samples present average resistivity values in theudrange of 12-106 μΩ·cm and only one specimen of the Rogersudsample fails the reliability test. The Rogers sample presentsudperfect adhesion characteristics, the adhesion can be improvedudfor the rest of the samples, especially for the PI sample. Theudgeneral performance of inkjet-printed structures on differentudsubstrate materials is good.
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