| 초록 |
Single-walled carbon nanotubes(SWNTs) are promising material for active layer in various electronic devices such as transistors and sensors owing to high intrinsic mobility and ability to be used to solution process which makes various applications possible. Especially, large-diameter SWNTs have advantage of lower operating voltage due to their low Schottky barrier with metal contact comparing to SWNTs with small-diameter. In addition, a cheap manufacturing cost of large-diameter SWNTs provides much high chance to commercialize those devices by cost-effective processes. Here, We report successfully purified large-diameter semiconducting SWNTs (Tuball, OCSiAl) by a thiophene based conjugated polymer and apply it as active layer for field-effect transistor. The printed SWNT transistors show high mobility over 2 cm2/Vs with a reasonable low off current of 10^-8. |
