Functional OXIdes Printed on Polymers and Paper
Despite strong market pull, printed electronics is advancing slow because of several technology issues. One of the key challenges is the deposition of electronic materials on traditional printing substrates like paper and polymers foils, which are temperature-sensitive substrates with excessive roughness and dimensional instability.
The project aims to solve one key challenge of printed electronics: to demonstrate an oxide-based thin film transistor (TFT) printed on paper and PET, and even biodegradable foils with an industrially relevant printing technique. Amorphous oxide semiconductors are next-generation semiconductors that are chosen due to higher mobilities and better stability as compared to organic semiconductors, whereas TFT is an electronic switch and basic building block of printed circuits, displays and sensors.
A scientific breakthrough is anticipated when applying rapid photonic curing at specific wavelengths in order to activate and sinter functional oxide (semiconductor, oxide dielectric or even transparent contact if non-visibility is desired) while the substrate bulk remains unaffected. Using light-curable inks it should be possible to fabricate printed TFTs on temperature sensitive polymers or even paper.
Scope of Research Activities
Key Technical Problems to Solve
Leading Principal Investigator