| 초록 |
Here we present solution shearing as a promising technique to generate high quality organic thin-films for organic transistors. To further enhance crystallinity, the substrate was patterned with alternation solvent wetting and dewetting regions to limit nucleation events and impede lateral crystal growth. This resulted in high aligned crystals TIPS-pentacene with mobility as high as 2.7 cm2/Vs. Furthermore, we demonstrate that crystal size of small molecule organic semiconductor can be controlled during solution shearing by tuning the shape and dimensions of the micropillars on the blade. Increasing the size and spacing of rectangular pillars increases the crystal size, resulting in higher thin-film mobility. Finally, we show that solution shearing can be performed on a curved surface using a curved blade. These demonstrations bring solution shearing closer to industrial applications and expand its applicability to various printed flexible electronics. |
