Solution-processed organic crystals for field-effect transistor arrays with smooth semiconductor/dielectric interface on paper substrates

► Solution-processed organic crystals in well-confined patterns for FET arrays on paper substrate. ► A solution-processed approach for the patterning of paper surface wettability. ► A simple, fast, and direct spin-coating process for the growth of organic crystals. ► High performance with μFET of 1.3 cm2/V s and on/off ratio of 108. ► Smooth semiconductor/dielectric interface with low trap density.