Skip to main content Accessibility help

Orientation of Organic Semiconductor Films on Photoreactive Polyimide Films and its Influence on Field-Effect Transistor Characteristics

  • Hiroshi Kikuchi, Yuichiro Uchida (a1), Yoshihide Fujisaki, Hiroto Sato, Hideo Fujikake, Taiichiro Kurita, Kuniharu Takizawa (a1) and Fumio Sato...


In this study, we have investigated the effect of surface treatment on the orientation and mobility of pentacene by using a photoreactive polyimide film to modify the gate-insulator surfaces of organic field effect transistors (OFETs). Surface modification includes a photoreactive polyimide film, presenting a passivated interface on which the semiconductor can grow. This polyimide film can control of the orientation of semiconductor by using linearly polarized deep UV (LPDUV) irradiation. Fabricated OFETs include stacked structures of Ta2O5 as the gate insulators and the photoreactive polyimide. Most of the characteristic parameters of the OFETs, such as carrier mobility and on/off current ration, have been improved by using the photo-alignment treatment achieved with LPDUV irradiation.



Hide All
1 Knipp, D., Street, R. A., Vlkel, A., and Ho, J., J. Appl. Phys., 93, 347 (2003).
2 Lin, Y. Y., Gundlach, D. J., Nelson, S. F., and Jackson, T. N., IEEE Electron Device Lett., 18, 606 (1997).
3 Klauk, H., Halik, M., Zshieschang, U., Schmid, G., Radlik, W., and Weber, W., J. Appl. Phys., 92, 5259 (2002).
4 Salleo, A., Chabinyc, M. L., Yang, M. S., and Street, R. A., Appl. Phys. Lett., 81, 4383 (2002).
5 Kelley, T. W., Muyres, D. V., Baude, P. F., Smith, T. P., and Jones, T. D. in Organic and Polymeric Materials and Devices, edited by Blom, P.W.M., Greenham, N.C., Dimitrakopoulos, C.D., Frisbie, C.D., (Mate. Res. Soc. Symp. Proc. 771, San Francisco, CA, 2003) pp. 169179.
6 Endo, H., Miyama, Y., Nihira, T., Fukuro, H., Akiyama, E., and Nagase, Y., J. Photopolym. Sci. Technol., 13, 277 (2000).
7 Hirosawa, I., Jpn. J. Appl. Phys., 35, 5873 (1996).
8 Iino, Y., Inoue, Y., Fujisaki, Y., Fujikake, H., Sato, H., Kawakita, M., Tokito, S., and Kikuchi, H., Jpn. J. Appl. Phys., 42, 299 (2003).
9 Fujisaki, Y., Inoue, Y., Kurita, T., Tokito, S., Fujikake, H., and Kikuchi, H., Jpn. J. Appl. Phys., 43, 372 (2004).
10 Dimitrakopulos, C. D., Brown, A. R., and Pomp, A., J. Appl. Phys., 80, 2501 (1996).


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed