MXenes, an emerging class of two-dimensional (2D) transition metal carbides and nitrides, have potential for application as high-performance, low-cost electrodes in organic field-effect transistors (OFETs) because of their water dispersibility, high conductivity, and work-function tunability. In this study, we successfully fabricated a large-scale, uniform Ti3C2Tx MXene electrode array on a flexible plastic substrate for application in high-performance OFETs. The work function of the Ti3C2Tx MXene electrodes was also effectively modulated via chemical doping with NH3. The fabricated OFETs with Ti3C2Tx MXene electrodes exhibited excellent device performance, such as a maximum carrier mobility of ∼1 cm2·V-1·s-1 and an on-off current ratio of ∼107 for both p-type and n-type OFETs, even though all the electrode and dielectric layers were fabricated on the plastic substrate by solution processing. Furthermore, MXene-electrode-based complementary logic circuits, such as NOT, NAND, and NOR, were fabricated via integration of p-type and n-type OFETs. The proposed approach is expected to expand the application range of MXenes to other OFET-based electronic devices, such as organic light-emitting displays and electronic skins.
Bibliographical noteFunding Information:
This work was supported by a grant from the Creative Materials Discovery Program (NRF-2019M3D1A1078296) through the National Research Foundation (NRF) of Korea funded by the Ministry of Science and ICT, the Materials and Components Technology Development Program (20006537, Development of High Performance Insulation Materials for Flexible OLED Display TFT) funded By the Ministry of Trade, Industry, and Energy (MOTIE), and the Basic Science Research Program (2017R1A4A1015400) through the NRF funded by the Ministry of Science, ICT, and Future Planning, Korea.
© 2019 American Chemical Society.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Physics and Astronomy(all)