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.
August 2001
Applied Physics Letters;8/27/2001, Vol. 79 Issue 9, p1300
Academic Journal
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 within a 30° range. When introduced in a thin-film transistor, they were found to enhance the saturation current by a factor of 2.5. A mechanism for this enhancement is proposed. © 2001 American Institute of Physics.


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...

  • 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...

  • 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.

  • Modeling and Simulationof Top-Contact Pentacene Thin Film Transistor Using Artificial Neutral Networks. Hayati, Mohsen; Mozafari, Farzad // Australian Journal of Basic & Applied Sciences;Sep2012, Vol. 6 Issue 9, p242 

    This paper presents the modeling and Simulation of Top-Contact PentaceneThin Film Transistors (TCPTFT) based on experimental data using artificial neutral networks (ANN). The obtained modeling results show that percentage of the Mean RelativeError (MRE %) for the proposed model is less than...

  • Effect of source/drain undercut on the performance of pentacene thin-film transistors on plastic. Sung Hwan Kim; Hye Young Choi; Jin Jang // Applied Physics Letters;11/8/2004, Vol. 85 Issue 19, p4514 

    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...

  • Stable complementary inverters with organic field-effect transistors on Cytop fluoropolymer gate dielectric. Walser, M. P.; Kalb, W. L.; Mathis, T.; Brenner, T. J.; Batlogg, B. // Applied Physics Letters;2/2/2009, Vol. 94 Issue 5, pN.PAG 

    We present results on small-molecule p- and n-type organic semiconductors in combination with the highly water repellent fluoropolymer Cytop™ as the gate dielectric. Using pentacene and N,N′-ditridecylperylene-3,4,9,10-tetracarboxylicdiimide (PTCDI-C13), we fabricated complementary...

  • Moisture induced electron traps and hysteresis in pentacene-based organic thin-film transistors. Gu, Gong; Kane, Michael G. // Applied Physics Letters;2/4/2008, Vol. 92 Issue 5, p053305 

    Previous work revealed that electron traps in pentacene formed in air cause hysteresis in thin-film transistor characteristics. Here, we experimentally showed that water vapor, rather than oxygen, is responsible for these hysteresis-causing trap states. Photogenerated and injected electrons are...

  • 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...

  • Hall-effect mobility of pentacene films prepared by the thermal evaporating method with different substrate temperature. Lin, Yow-Jon; Tsao, Hou-Yen; Liu, Day-Shan // Applied Physics Letters;7/2/2012, Vol. 101 Issue 1, p013302 

    We studied the Hall-effect mobility of pentacene films prepared by the thermal evaporating method with different substrate temperature. A crossover from coherent bandlike charge transport with mobilities up to several tens of cm2/V-s at low temperature to an incoherent hopping motion at high...


Read the Article


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

Try another library?
Sign out of this library

Other Topics