| 초록 |
Here, we introduce a flexible pressure-sensitive contact transistor (PCT), a new type of organic thin-film pressure-sensing device. Similar to the point-contact transistor, the first solid-state transistor, the PCT consists of deformable S/D electrodes contacted on an organic transistor body. The laser-patterned interdigitated S/D electrodes were fabricated by embedding conducting single-walled carbon nanotubes on surface of a microstructured PDMS. Under pressure loads, the deformation of the electrodes on an organic semiconductor layer leads to the direct dependence of drain current on variation in both channel geometry and contact resistance in the device. By operating the device in subthreshold regime, we have achieved ultralow power consumption with maintaining high-sensitivity. Finally, we demonstrate a 5 × 5 an active PCT matrix for sensory arrays on a 3-micron-thick parylene substrate. |
