Advances in high-resolution printed transistors: The case of bio-sourced organic materials

Today, it is no longer a secret: electronic and electrical equipment was not conceived for sustainable end-of-life scenarios. A paradigm shift from linear to circular comprising eco-friendly design and processing of electronic devices is deemed necessary in the quest of achieving sustainability in the electronic sector. Solution-processable (compatible with printing technologies), potentially biodegradable bio-sourced organic electronic materials are ideal candidates to decrease the environmental footprint of electronics. In this review, we present the recent advancements in printed transistors. We highlight the massive progress in the printing of high-resolution patterns using gravure printing, reverse offset printing and inkjet printing. Afterwards, we outline the recent developments in the printing of dielectric and active layers using bio-sourced organic materials. Special attention is given to the fabrication of active layers by deposition of small molecules semiconductor:polymer additive blends and its tremendous potential for printing technologies.