Channel-dimension controllable fibriform organic field-effect transistors via novel transfer method of carbon nanotube electrodes
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초록
내용
With the great attention of electronic textiles for wearable devices, fibriform organic field-effect transistor is a key component for organizing the electronic circuit into the fabric. However fiber field-effect transistors have disadvantage of channel dimension since the resolution of printing or deposition techniques on microfibers is limited. Here, we report a new strategy to prepare the fiber organic field-effect transistors of which channel dimension can be readily controllable. Source and drain(S/D) electrodes with desirable geometry is printed at soft substrate, then directly transferred to the semiconductor-insulator layer. Fine geometry of CNT electrodes was successfully transferred to the microfiber and resulting transistors with wrapped CNT S/D electrodes exhibited a high on/off ratio of ~ 105 and good field effect mobility of 0.73 cm2 V−1 s−1. It was confirmed that the drain current of the device was varied according to the channel dimension that we designed.