Flexible, Scalable and Buckled Electronics based on Oxide Thin-Film Transistors

Abstract

The field of flexible electronics has rapidly expanded over the last decades, providing a new class of electronic devices and systems with unique features, such as lightweight, mechanical flexibility, and biocompatibility. To evaluate the scalability of our thin-film technology for systems realization, as well as for the development of highly flexible devices, two parallel strategies are explored. First, the stability of oxide thin-film transistors (TFTs) is investigated under different environmental conditions (temperature and humidity variation). Afterwards, InGaZnO-based TFTs are integrated with Perovskite Light Emitting Diodes (PeLEDs), to evaluate the technological scalability for flexible active display. Secondly, the employment of stretchable Polydimethylsiloxane (PDMS), acting as a stretchable substrate, in combination with the induction of customized wrinkles in the electronics stack, is used to allow the realization of bendable and stretchable TFTs and circuits.