DOI QR코드

DOI QR Code

An Electrical Characteristics on the Pentacene-Based Organic Thin-Film Transistors using PVA Alignment Layer

PVA 배열층을 이용한 펜타신 유기 박막 트랜지스터의 전기적 특성

  • 전현성 (건국대학교 전자공학부) ;
  • 오환술 (건국대학교 전자공학부)
  • Published : 2010.03.01

Abstract

The pentacene-based organic thin film transistors(OTFTs) using polyvinylalcohol(PVA) alignment layer were fabricated on the $SiO_2$ evaporated to n-type (111) Si substrates. The pentacene film was deposited by thermally evaporated at $10^{-7}$ torr. X-ray diffraction (XRD) and atomic force microscope(AFM) measurement showed pentacene film which deposited on rubbed PVA layers were partially crystallized at (001) plane. The pentacene OTFTs with PVA layers rubbed perpendicular to the direction of current flow was shown to align better orientation than parallel rubbed case and thus to enhance the mobility and saturation current by a factor of 2.3 respectively. We obtained mobility by 0.026 $cm^2$/Vs and on-off current ratio by ${\sim}10^8$.

References

  1. E. H. Jazaairi, T Trigaud, and J. P. Molton, "OTFT with silk printed drain and source", Micro and Nanosystems, Vol. 1, p. 46, 2009. https://doi.org/10.2174/1876402910901010046
  2. S. T. Kato, Y. Iba, S. Shinaoka, and S. T. Takagi, "Comfprmable flexiblee large-area networks of pressure and thermal sensors with organic transistor active matrixes", Alli. Phys. Lett., Vol. 86, p. 073511, 2005. https://doi.org/10.1063/1.1868868
  3. H. Klauk, David J. Gundlach, M. Bonse, C.-C. Kuo, and Thomas N. Jackson, "A reduced complexity process for organic thin film transistors", Appl. Phys. Lett., Vol. 76, p. 1692, 1999.
  4. Benor, A. Knipp, "Electrical stability of pentacene thin film transistors", Org. Electron., Vol. 9, p. 209, 2007. https://doi.org/10.1016/j.orgel.2007.10.012
  5. Y. Y. Lin, D. J. Gundlach, S. F. Nelson, and T. N. Jackson, "Pentacene-based organic thin-film transistors", IEEE Transactions on Electron Devices, Vol. 44, No. 8, p. 1325, 1997. https://doi.org/10.1109/16.605476
  6. G. W. Kang, K. M. Park, J. H. Song, C. H. Lee, and D. H. Hwang, "The electrical characteristics of pentacene-based organic field effect transistors with polymer gate insulators", Curr. Appl. Phys., Vol. 5, p. 297, 2005. https://doi.org/10.1016/j.cap.2004.02.012
  7. D. A. Bernards and G. G. Malliaras, “Steadystate and transient behavior of organic electrochemical transistors”, Adv. Funct. Mater., Vol. 17, p. 3538, 2007. https://doi.org/10.1002/adfm.200601239
  8. S. Hong, A. Amassian, A. R. Woll, S. Bhargava, J. D. Ferguson, G. G. Malliaras, J. D. Brock, and J. R. Engstrom, “Real time monitoring of pentacene growth on $SiO_2$ from a supersonic source”, Appl. Phys. Lett., Vol. 92, p. 253304, 2008. https://doi.org/10.1063/1.2946497
  9. J. Kim, J. Jeong, H. D. Cho, C. Lee, S. O. Kim, S. K. Kwon, and Y. Hong, "Allsolution-processed bottom-gate organic thinfilm transistor with improved subthreshold behaviour using functionalized pentacene active layer", J. Phys. D: Applied Phys., Vol. 42, p. 115107, 2009. https://doi.org/10.1088/0022-3727/42/11/115107
  10. H. Sirringhaus, P. J. Brown, R. H. Friend, M. M. Nielsen, K. Bechgaard, B. M. W. Langeveld-Voss, A. J. H. Spiering, R. A. J. Janssen, E. W. Meijer, P. Herwig, and D. M. de Leeuw, "Two-dimensional charge transport in self-organized, high-mobility conjugated polymers", Nature, Vol. 401, p. 685, 1999. https://doi.org/10.1038/44359
  11. M. M. Payne, S. R. parkin, J. E. Anthony, and C. C. Jackson, "Organic field effect transistors from solution deposited functionalized acenes with mobilities as high as 1 $cm^2$/V.s", J. Am. Chem. Soc., Vol. 127, p. 4986, 2005. https://doi.org/10.1021/ja042353u
  12. D. Shenoy, K. Grueneberg, J. Naciri, and R. Shashidhar, "Device properties and polar anchoring of nematic molecules at photodimerized surfaces", Proc. SPIE, Vol. 24, p. 3635, 1999.
  13. S. F. Nelson, Y. Y. Lin, D. J. Gundlach, and T. N. Jackson, "Temperature-independent transport in high-mobility pentacene transistors", Appl. Phys. Lett., Vol. 72, p. 1854, 1998. https://doi.org/10.1063/1.121205
  14. J. Wang, D. J. Gundlach, C. C. Kuo, and T. N. Jackson "Improved contacts for organic electronic devices using self-assembled charge transfer materials", 41st Electronic Materials Conference Digest, p. 16, 1999.