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Organic Thin Film Transistors for Liquid Crystal Display Fabricated with Poly 3-Hexylthiophene Active Channel Layer and NiOx Electrodes

  • Oh, Yong-Cheul (Department of Electrical Engineering, Kwangwoon University)
  • Published : 2006.12.01

Abstract

We report on the fabrication of P3HT-based thin-film transistors (TFTs) for liquid crystal display that consist of $NiO_x$, poly-vinyl phenol (PVP), and Ni for the source-drain (S/D) electrodes, gate dielectric layer, and gate electrode, respectively The $NiO_x$ S/D electrodes of which the work function is well matched to that of P3HT are deposited on a P3HT channel by electron-beam evaporation of NiO powder. The maximum saturation current of our P3HT-based TFT is about $15{\mu}A$ at a gate bias of -30 V showing a high field effect mobility of $0.079cm^2/Vs$ in the dark, and the on/off current ratio of our TFT is about $10^5$. It is concluded that jointly adopting $NiO_x$ for the S/D electrodes and PVP for gate dielectric realizes a high-quality P3HT-based TFT.

Keywords

References

  1. H.-C. Moon, J-Y. Hwang, W.-W. Lee, and D.-S. Seo, 'EO performances of flexible TN-LCD using in-situ ultraviolet exposure during of polyimide on the polymer film', Trans. EEM, Vol. 6, No.3, p. 106, 2005
  2. J-W. Han, Y.-H. Kim, J-H. Kim, J-Y. Hwang, and D.-S. Seo, 'Analysis of ITO on polymer substrate by external bending force', Trans. EEM, Vol. 6, No.4, p. 149, 2005
  3. C.-B. Park, K.-D. Jung, S.-H. jin, B.-G. Park, and J -D. Lee, 'Pentacene-based thin film transistors with improved mobility characteristics using hybrid gate insulator', Journal of Information Display, Vol. 6, No. 2, p. 16, 2005
  4. R. A. Street, W. S. Wong, S. E. Ready, M. L. Chabinyc, A. C. Arias, J. H. Daniel, R. E. Apte, A. Salleo, R. Lujan, B. Ong, and Y. Wu, 'Printed polymer and a-Si TFT backplanes for flexible displays', Journal of Information Display, Vol. 6, No.3, p. 12, 2005
  5. S.-S. Lee, T.-J. Song, M.-S. Ko, and S.-M. Cho, 'Low-molecular-weight white organic-light-emitting-devices using direct color mixing method', Journal of Information Display, Vol. 3, No.2, p. 6, 2002
  6. S. W. Pyo, J. H. Shim, and Y. K. Kim, 'An organic electrophosphoresent device driven by all-organic thin film transistor using polymeric gate insulator', Journal of Information Display, Vol. 4, No.2, p. 1, 2003
  7. J. H. Park, Y. S. Lee, and J. S. Choi, 'A study on highly efficient organic electroluminescent devices', Journal of Information Display, Vol. 4, No.2, p. 19, 2003 https://doi.org/10.1080/15980316.2003.9651931
  8. S. H. Kim, C. Hsu, C. Zhang, H. Skulason, F. Uckert, D. Ledoux, Y. Cao, and I. Parker, 'Degradation of PLEDs and a way to improve device performances', Journal of Information Display, Vol. 5, No.2, p. 14, 2004
  9. S.-H. Na, J. H. Shim, M. Y. Kwak, and J.-W. Seo, 'Fabrication of charge-pump active-matrix OLED display panel with 64 x 64 pixels', Journal of Information Display, Vol. 7, No.1, p. 35, 2006 https://doi.org/10.1080/15980316.2006.9651997