Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 31, 2014
Previous Article Next Article

Graphene-based electrodes for enhanced organic thin film transistors based on pentacene

Author affiliations

Abstract

This paper presents 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-pentacene) and pentacene-based organic thin film transistors (OTFTs) with monolayer graphene source–drain (S–D) electrodes. The electrodes are patterned using conventional photolithographic techniques combined with reactive ion etching. The monolayer graphene film grown by chemical vapor deposition on Cu foil was transferred on a Si dioxide surface using a polymer-supported transfer method to fabricate bottom-gate, bottom-contact OTFTs. The pentacene OTFTs with graphene S–D contacts exhibited superior performance with a mobility of 0.1 cm2 V−1 s−1 and an on–off ratio of 105 compared with OTFTs with Au-based S–D contacts, which had a mobility of 0.01 cm2 V−1 s−1 and an on–off ratio of 103. The crystallinity, grain size, and microscopic defects (or the number of layers of graphene films) of the TIPS-pentacene/pentacene films were analyzed by X-ray diffraction spectroscopy, atomic force microscopy, and Raman spectroscopy, respectively. The feasibility of using graphene as an S–D electrode in OTFTs provides an alternative material with high carrier injection efficiency, chemical stability, and excellent interface properties with organic semiconductors, thus exhibiting improved device performance of C-based electronic OTFTs at a reduced cost.

Graphical abstract: Graphene-based electrodes for enhanced organic thin film transistors based on pentacene

Back to tab navigation

Supplementary files

Article information


Submitted
25 Dec 2013
Accepted
23 Apr 2014
First published
23 Apr 2014

Phys. Chem. Chem. Phys., 2014,16, 16701-16710
Article type
Paper

Graphene-based electrodes for enhanced organic thin film transistors based on pentacene

S. Basu, M. C. Lee and Y. Wang, Phys. Chem. Chem. Phys., 2014, 16, 16701
DOI: 10.1039/C3CP55440F

Social activity

Search articles by author

Spotlight

Advertisements