First demonstration of high performance 2D monolayer transistors on paper substrates

In this work, we realize high performance flexible graphene and MoS2 nanoelectronics on commercially available paper substrates for the first demonstration. Polyimide smoothing layer is employed to reduce peak to peak surface roughness by ∼10x to less than 2 nm, which enables integration of atomically-thin 2D nanomaterials for electronic grade performance on paper substrates. Our studies on two terminal graphene devices yield comprehensive insights into the electro-mechanical performances dependent on paper substrate roughness. Our realization of high performance chemical vapor deposited (CVD) graphene and M0S2 GHz FETs features record 2D cut-offfrequencies and flexibility on paper substrates, which indicates that this soft and ubiquitous substrate can be a strong candidate for future flexible high performance nanoelectronics for Internet of Things and disposable sensors.