| 초록 |
The 2 dimensional films of single-walled carbon nanotubes(SWNTs) have attracted much attention as a component of large area organic electronics. Some methods rendering the films semiconducting characteristics have developed such as electrical break-down, chemical modification, and separation of semiconducting SWNTs. It is also possible that the deposition of appropriate density constructs semiconducting films without complicated processes above mentioned. It happens since if SWNTs were individually deposited, junctions between metallic SWNTs and semiconducting SWNTs form Schottky barrier which is gate field modulated. Here, we use conjugated block copolymer, poly(styrene-b-phenylene) for dispersing SWNTs in non-covalent way. The Conjugated block copolymer has the excellent dispersing ability, so that SWNTs deposit independently on substrates when spin-cast. The fabricated films show high on-off ratios more than 100000 from proper concentration of solution. |
