All inkjet-printed electronics based on electrochemically exfoliated two-dimensional metal, semiconductor, and dielectricopen access
- Authors
- Song Okin; Rhee Dongjoon; Kim Jihyun; Jeon Youngseo; Mazanek Vlastimil; Soll Aljoscha; KWON, YONGHYUN ALBERT; 조정호; Kim Yong-Hoon; Kang Joohoon; Sofer Zdenek
- Issue Date
- Sep-2022
- Publisher
- NATURE PUBLISHING GROUP
- Citation
- npj 2d Materials and Applications, v.6, no.1
- Journal Title
- npj 2d Materials and Applications
- Volume
- 6
- Number
- 1
- URI
- https://yscholarhub.yonsei.ac.kr/handle/2021.sw.yonsei/6820
- DOI
- 10.1038/s41699-022-00337-1
- ISSN
- 2397-7132
- Abstract
- Inkjet printing is a cost-effective and scalable way to assemble colloidal materials into desired patterns in a vacuum- and lithography-free manner. Two-dimensional (2D) nanosheets are a promising material category for printed electronics because of their compatibility with solution processing for stable ink formulations as well as a wide range of electronic types from metal, semiconductor to insulator. Furthermore, their dangling bond-free surface enables atomically thin, electronically-active thin films with van der Waals contacts which significantly reduce the junction resistance. Here, we demonstrate all inkjet-printed thin-film transistors consisting of electrochemically exfoliated graphene, MoS2, and HfO2 as metallic electrodes, a semiconducting channel, and a high-k dielectric layer, respectively. In particular, the HfO2 dielectric layer is prepared via two-step; electrochemical exfoliation of semiconducting HfS2 followed by a thermal oxidation process to overcome the incompatibility of electrochemical exfoliation with insulating crystals. Consequently, all inkjet-printed 2D nanosheets with various electronic types enable high-performance, thin-film transistors which demonstrate field-effect mobilities and current on/off ratios of similar to 10 cm(2) V-1 s(-1) and > 10(5), respectively, at low operating voltage.
- Files in This Item
-
- Appears in
Collections - College of Engineering > Chemical Engineering > 1. Journal Articles
Items in Scholar Hub are protected by copyright, with all rights reserved, unless otherwise indicated.