| Title |
Analysis of Anisotropical Electrical Conduction Properties of Maleate System LB Ultra-thin Films |
| Authors |
최용성(Choe, Yong-Seong) ; 김도균(Kim, Do-Gyun) ; 유승엽(Yu, Seung-Yeop) ; 권영수(Gwon, Yeong-Su) |
| Keywords |
C_{18}MA-VE_2 copolymer ; LB ultra-thin films ; I-V characteristics ; Conduction mechanism ; Schottky current |
| Abstract |
We have fabricated LB ultra-thin films of maleate system by LB technique and evaluated the deposited status of LB ultra-thin films by I-V characteristics such as capacitance. It was found that the thickness of LB ultra-thin per layer is 27~30[{ AA}] by XRD. And, we have known that the conductivity along the horizontal direction of LB ultra-thin films was about 10^{-8}[S/cm], it corresponds to the semiconducting materials. Also, the I-V characteristics along the vertical direction of LB ultra-thin films was dominated by Schottky type current, the activation energy obtained by current-temperature characteristics was about 0.84[eV] and the conductivity was about 10^{-14}[S/cm], it corresponds to the insulator. And, the anisotropic conduction mechanism of the LB ultra-thin films in vertical direction and horizontal direction is determined by the hydrophilic group and the hydrophobic group in LB ultra-thin films. The above results are applicable to the semiconductor devices such as switching device, which function at the molecular level. |