Skip to main content
×
×
Home

Surface Plasmon-mediated Luminescence in Organic Field-effect Transistors

  • Akira Watanabe (a1) and Hirokazu Tada (a2)
Abstract

Considerable attention has recently been paid to light-emitting organic filed-effect transistors (LEOFETs) because of their potential applications to novel opto-electronic devices. In most LEOFETs, light emission occurs through the recombination of carriers injected from electrodes. Various efforts have been, thus, made to improve injection and transport properties of minority carriers in organic materials. On the other hand, light emission was frequently observed when we applied reverse bias voltages, that is, positive bias voltages, to the drain electrode for p-type FETs with grounded source and negatively biased gate electrodes. In this circuit, minority carriers were not injected into organic semiconductors. Nevertheless, the luminous intensity increased with drain voltage.

In the present work, we have prepared such novel type LEOFETs with various device structures. We have inserted thin metal wires between the source and drain electrodes in the channel region of pentacene FETs. It was found that the light emission was observed around the metal wires inserted and the luminous efficiency was improved with the number of wires. The luminescence spectrum was identical to that of pentacene films. The light emission was thought to be generated by via energy transfer to the pentacene films from plasmon excited on metal surfaces by current injection.

Copyright
References
Hide All
1. Hepp, A., Heil, H., Weise, W., Ahles, M., Schmechel, R., H. von Seggern, Phys. Rev. Lett. 91, 157406 (2003).
2. Sakanoue, T., Fujiwara, E., Yamada, R., Tada, H., Appl. Phys. Lett. 84, 16 (2004).
3. Oyamada, T., Sasabe, H., Adachi, C., Okuyama, S., Shimoji, N., Matsushige, K., Appl. Phys. Lett. 86, 093505 (2005).
4. Sakanoue, T., Fujiwara, E., Yamada, R., Tada, H., Chem. Lett. 91, 15 (2005)
5. Swensen, J. S., Soci, C., Heeger, A. J., Appl.Phys. Lett. 87, 253511 (2005).
6. Zaumseil, J., Friend, R. H., Sirringhaus, H., Nature materials 5, 70 (2006).
7. Herwig, P. T., Müllen, K., Adv. Mater. 11, 6 (1999).
8. Berndt, R., Gimzewski, J. K., Johansson, P., Phys. Rev. Lett. 67, 27 (1991).
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 2 *
Loading metrics...

Abstract views

Total abstract views: 70 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 21st July 2018. This data will be updated every 24 hours.