A Study on the Leakage Current Voltage of Hybrid Type Thin Films Using a Dilute OTS Solution

  • Kim Hong-Bae (School of Electronic and Information Engineering, Cheongju University) ;
  • Oh Teresa (School of Electronic and Information Engineering, Cheongju University)
  • Published : 2006.03.01


To improve the performance of organic thin film transistor, we investigated the properties of gate insulator's surface according to the leakage current by I-V measurement. The surface was treated by the dilute n-octadecyltrichlorosilane solution. The alkyl group of n-octadecyltrichlorosilane induced the electron tunneling and the electron tunneling current caused the breakdown at high electric field, consequently shifting the breakdown voltage. The 0.5% sample with an electron-rich group was found to have a large leakage current and a low barrier height because of the effect of an energy barrier lowered by, thermionic current, which is called the Schottky contact. The surface properties of the insulator were analyzed by I-V measurement using the effect of Poole-Frankel emission.