Prince Wesley Vanaraj
Researcher and PhDStudent in Department of Printed Electronics Engineering, Sunchon National University, Suncheon South Korea
IGZO Particle Based N-Type Semiconducting Ink for Printing TFTs Using All R2R Gravure Process
Prince Wesley Vanaraj(1,*), Heyjin Park (2), Junfeng Sun (1,2) and Gyoujin Cho*
Department of Printed Electronics. Sunchon National University, Suncheon-si, Jeonnam-do, 57922, Korea
Indium gallium zinc oxide, printed electronics, thin film transistors, R2R gravure
The indium gallium zinc oxide (IGZO) semiconductor based thin film transistors (TFTs) have shown the high mobility (~30 cm2/Vs) and high on-off current ratio (~107). However, those electrical performances of TFTs were all attained on a rigid substrate using a vacuum deposition method. Therefore, in recent years, there have been a lot of efforts poured to repeat those electrical properties from the all printed IGZO based TFTs. In this presentation, we will show a R2R gravure system including Ag based conducting ink, BaTiO3 based dielectric ink and IGZO based semiconducting ink to completely R2R print TFTs with the printing speed of 6 m/min (Fig. 1). The details electrical characterization of printed IGZO based TFTs will be presented as well.
The authors thank the Ministry of Education in Korea for the financial support through the Basic Science Research Program in Sunchon National University (NRF-2014R1A6A1030419) and the Global Leading Technology Program of the Office of Strategic R&D Planning (OSP), funded by the Ministry of Commerce, Industry and Energy, Republic of Korea (10042537, Printed Electronics Total Solution Development).
Prince Wesley Vanaraj is a Researcher at Department of Printed Electronics Engineering in Sunchon National University. He is currently working on Roll to Roll gravure printable n-type semiconducting ink that can be employed in the fabrication of e-paper, flexible displays, flexible sensors etc.
The printed electronics engineering is a new academic field at the emerging stage. Using a R2R (Roll-to-Roll) printing method on flexible paper, textile, and plastic film, it can manufacture various electronic devices at low cost. This fused technology will open the gate way to completely change the semiconductor and display industries environment. Possessing the leading technology in NT-PT printign fields, Sunchon National University (SCNU) has selected and been supporting printed electronics as a univeristy specialization field. As a fruit of this effot, printed electonics stated the WCU porgram in 2008 and extended the program to 2020 via BK21PLUS program.