TITLE

Effect of source/drain undercut on the performance of pentacene thin-film transistors on plastic

AUTHOR(S)
Sung Hwan Kim; Hye Young Choi; Jin Jang
PUB. DATE
November 2004
SOURCE
Applied Physics Letters;11/8/2004, Vol. 85 Issue 19, p4514
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We studied the electrical properties of bottom contact pentacene thin-film transistors (TFTs) on plastic with and without source/drain undercut. The undercut depends on the Cr thickness in Au/Cr source/drain electrodes, where Au is used for the ohmic contact with pentacene, and the Cr is to enhance the adhesion of Au to the cross-linked poly-4-vinyphenol gate insulator. The undercut can be removed by reducing the Cr thickness less than 5 nm. The TFTs with and without undercut exhibited the field-effect mobility in the saturation region of 0.96 and 1.3 cm2/V s, respectively, but in the linear region the field-effect mobility of the TFT with source/drain undercut is ∼1/9 that of the organic TFT without undercut.
ACCESSION #
14974930

 

Related Articles

  • Vertical channel all-organic thin-film transistors. Parashkov, R.; Becker, E.; Hartmann, S.; Ginev, G.; Schneider, D.; Krautwald, H.; Dobbertin, T.; Metzdorf, D.; Brunetti, F.; Schildknecht, C.; Kammoun, A.; Brandes, M.; Riedl, T.; Johannes, H.-H.; Kowalsky, W. // Applied Physics Letters;6/23/2003, Vol. 82 Issue 25, p4579 

    Technologically simple and cost-effective processes are essential for the fabrication of organic electronic devices. In this letter, we present a concept for making vertical channel all-organic thin-film transistors on glass substrate. This concept avoids the need for patterning processes with...

  • Scaling behavior and parasitic series resistance in disordered organic field-effect transistors. Meijer, E. J.; Gelinck, G. H.; van Veenendaal, E.; Huisman, B.-H.; de Leeuw, D. M.; Klapwijk, T. M. // Applied Physics Letters;6/23/2003, Vol. 82 Issue 25, p4576 

    The scaling behavior of the transfer characteristics of solution-processed disordered organic thin-film transistors with channel length is investigated. This is done for a variety of organic semiconductors in combination with gold injecting electrodes. From the channel-length dependence of the...

  • Balancing the ambipolar conduction for pentacene thin film transistors through bifunctional electrodes. Chuan-Yi Yang; Dhananjay; Shiau-Shin Cheng; Chun-Wei Ou; You-Che Chuang; Meng-Chyi Wu; Chih-Wei Chu // Applied Physics Letters;6/23/2008, Vol. 92 Issue 25, p253307 

    We report an effective way to equilibrate hole and electron transport in ambipolar pentacene thin film transistors (TFTs). It was achieved by inserting an ultra thin lithium fluoride (LiF) layer at the electrode/organic interface to form a bifunctional source/drain electrode. It can be observed...

  • Micro-imprinted prism substrate for self-aligned short channel organic transistors on a flexible substrate. Jeon, Jin; Tee, Benjamin C.-K.; Murmann, Boris; Bao, Zhenan // Applied Physics Letters;1/23/2012, Vol. 100 Issue 4, p043301 

    Using a simple micro-imprinting process on flexible substrates, we demonstrate fabrication of self-aligned short channel organic thin film transistors (OTFTs) with significantly reduced parasitic capacitance. The surface topology resulting from the imprinted prism-like structures enables...

  • Deep-level defect characteristics in pentacene organic thin films. Yang, Yong Suk; Kim, Seong Hyun; Lee, Jeong-Ik; Chu, Hye Yong; Do, Lee-Mi; Lee, Hyoyoung; Oh, Jiyoung; Zyung, Taehyoung; Ryu, Min Ki; Jang, Min Su // Applied Physics Letters;3/4/2002, Vol. 80 Issue 9, p1595 

    Organic thin-film transistors using the pentacene as an active electronic material have shown the mobility of 0.8 cm²/V s and the grains larger than 1 µm. To study the characteristics of electronic charge concentrations and the interface traps of the pentacene thin films, the capacitance...

  • Orientation of pentacene films using surface alignment layers and its influence on thin-film transistor characteristics. Swiggers, M. L.; Xia, G.; Slinker, J. D.; Gorodetsky, A. A.; Malliaras, G. G.; Headrick, R. L.; Weslowski, Brian T.; Shashidhar, R. N.; Dulcey, C. S. // Applied Physics Letters;8/27/2001, Vol. 79 Issue 9, p1300 

    We have investigated the effect of surface order on the orientation and mobility of pentacene. The surface order was created using monolayers and polymers that are normally used to align liquid crystals. Rubbed polyvinylalcohol layers were found to align approximately 27% of the pentacene grains...

  • 1/f noise in pentacene organic thin film transistors. Necliudov, P. V.; Rumyantsev, S. L.; Shur, M. S.; Gundlach, D. J.; Jackson, T. N. // Journal of Applied Physics;11/1/2000, Vol. 88 Issue 9, p5395 

    Reports on the flicker noise in pentacene organic thin film transistors (TFT) of different designs. Effect of the TFT design on the noise level and dependence on the gate and drain-source biases; Extracted Hooge parameter alpha; Higher noise level of the bottom source and drain contacts TFT.

  • Flexible top gate pentacene thin film transistor with embedded source-drain electrode. Tae-il Kim; Sang Jun Son; Soon-min Seo // Applied Physics Letters;7/7/2008, Vol. 93 Issue 1, p013304 

    Top gate pentacene thin film transistor operating at low voltage was established on flexible poly(ethylene terephthalate) substrate by multilayer transfer fabrication. Source and drain electrodes were embedded in a flexible substrate. Thin polymer film and metal oxide layer prepared from metal...

  • Laser forward transfer of silver electrodes for organic thin-film transistors. Kim, H.; Auyeung, R. C. Y; Lee, S. H.; Huston, A. L.; Piqué, A. // Applied Physics A: Materials Science & Processing;Aug2009, Vol. 96 Issue 2, p441 

    Organic thin-film transistors (OTFTs) with top- and bottom-contact configurations were fabricated using silver nano-inks printed by laser forward transfer for the gate and source/drain electrodes with pentacene and poly-4-vinylphenol as the organic semiconductor and dielectric layers,...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics