Characterization of organic field effect transistors with graphene electrodes

Sangchul Lee, Gunho Jo, Seok Ju Kang, Gunuk Wang, Minhyeok Choe, Woojin Park, Dong Yu Kim, Yung Ho Kahng, Takhee Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The performance of multi-layer graphene (MLG) films as alternative electrodes for pentacene organic field effect transistors (OFETs) was investigated and compared to conventional OFETs with Au electrodes. We observed the enhancement of charge injection for graphene-electrode pentacene OFETs (GR-pentacene OFET), as evidenced by decreased contact resistance and lower barrier height than in the case of Au-electrode pentacene OFETs (Au-pentacene OFET). Our results show that the beneficial orientation of the interfacial dipole layer is responsible for the improved performance of the graphene-electrode OFETs compared to Au-pentacene OFETs. This study will help to establish graphene-based thin films as efficient electrode materials for organic electronic devices.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30
Pages799-800
Number of pages2
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event30th International Conference on the Physics of Semiconductors, ICPS-30 - Seoul, Korea, Republic of
Duration: 2010 Jul 252010 Jul 30

Publication series

NameAIP Conference Proceedings
Volume1399
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other30th International Conference on the Physics of Semiconductors, ICPS-30
CountryKorea, Republic of
CitySeoul
Period10/7/2510/7/30

Keywords

  • Graphene
  • barrier height
  • contact resistance
  • organic field effect transistor

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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