Faculty/Research

Research Groups

차세대 유연성 소자 및 회로 연구실

Advanced fleXible Electronics Laboratory

Prof. : Prof. Hong, Yongtaek

Research Area : Thin film devices, Printed electronics, and Flexible/Stretchable electronics



  • About the Laboratory & Research Area
  • AXEL (Advanced fleXible Electronis Lab) was first established by prof. Yongtaek Hong in March, 2006. Currently, we have one post-doctor and 17 graduate students (7MS, 10PhD).
    Our research area includes advanced flexible solid-state thin film devices, fabricated mainly by solution processes including inkjet-printing, spin-coating, doctor-blading instead of conventional photolithography, electronic circuits, stretchable electronics, and electronic skin (E-skin) which means the bio-compatible integrated sensor array; for example, pressure and temperature sensitive sensors. We are focusing on the fabrication, electrical and optical performance characterization, analysis of operation principles, and electrical modeling for such devices.
    Based on these researches, we are developing core technology to implement flexible/stretchable backplanes for flat panel displays based on OLED, electrophoretic, LCD, and other frontplane technologies.
  • Research Interests & Projects
  • Our up-to-date research topics include graphene-based thin film devices, all inkjet-printed organic based logic devices, characteristics analysis and fabrication of oxide TFT, vertical OFET, and stretchable electronics with E-skin. Most of them are based on solution process and organic/oxide semiconductors (rather than Si or Ⅲ-Ⅴ semiconductors).
    Our main research projects cover several research fields about stretchable lighting, device analysis, 3-dimensional fiber TFT fabrication, super-capacitor, stretchable backplane with E-skin as a frontplane, and bio-inspired robotics. In detail, we perform each project with ETRI, Samsumg display, KOLON, POSTECH, and several professors.
  • Journals & Patents
  • D. Gupta, et al. Organic Electronics, Vol. 11, No. 1, pp. 127-136, January, 2010.
    J. Jeong, et al. Japanese Journal of Applied Physics, Vol. 49, No. 3, 036501 (5pp), March, 2010.
    J. Jeong, et al. Japanese Journal of Applied Physics, Vol. 49, No. 3, 03CB02 (6pp), March, 2010.
    J. Jeong, et al. Japanese Journal of Applied Physics, Vol. 49, No. 5, 05EB09 (4pp), May 2010.
    P.K. Nayak, et al. Physica Status Solidi A-Applications and Materials Science, Vol. 207, No. 7, pp. 1664-1667, July 2010.
    P.K. Nayak, et al. Journal of SID, Vol. 18, No. 8, pp. 552-557, August 2010.
    J. Jeong, et al. Thin Solid Films, Vol. 518, No. 22, pp.6295-6298, September 2010.
    P.K. Nayak, et al. Applied Physics Letters, Vol. 97, No. 18, 183504 (3pp), November 2010.
    S. Chung, et al. Japanese Journal of Applied Physics, Vol. 50, 03CB05, March 2011.
    S. Chung, et al. Applied Physics Letters, Vol. 98, 153110, April 2011.
    D. Gupta, et al. IEEE Transactions on Electron Devices, Vol. 58, No. 7, pp. 1995-2002, July 2011.
    S. Chung, et al. IEEE Electron Device Letters, Vol. 32, No. 8, pp. 1134-1136, August 2011.
    D. Kim, et al. Organic Electronics, Vol. 12, No. 11, pp. 1841-1845, November 2011.
    J. Jeong, et al. IEEE Electron Device Letters, Vol. 32, No. 12, pp. 1758-1760, December 2011.
    S. Chung, et al. IEEE/OSA Journal of Display Technology, Vol. 8, No. 1, pp. 48-53, January 2012.
    J. Jeong, et al. IEEE Transactions on Electron Devices, Vol. 59, No. 3, pp. 710-714, March 2012.
    H. Kim, et al. Journal of the Optical Society of Korea, Vol. 16, No. 2, pp. 181-184, June 2012.
    Y. Park, et al. Organic Electronics, Vol. 13, pp. 2887-2892, September 2012.
    J. Lee, et al. Journal of Physics D: Applied Physics, 2013. (Accepted)

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