All van der Waals Semiconducting PtSe2 Field Effect Transistors with Low Contact Resistance Graphite Electrodes
Research output: Contribution to journal › Article › Research › peer-review
Authors
Organisational units
External Organisational units
- Kind Abdullah University of Science and Technology (KAUST)
- TU Wien
- University of Nova Gorica
- Zentrum f Elektronenmikroskopie Graz
- Technische Universität Graz
- Research Center for Functional Materials, National Institute for Materials Science
- Chinese Academy of Sciences
Abstract
Contact resistance is a multifaceted challenge faced by the 2D materials community. Large Schottky barrier heights and gap-state pinning are active obstacles that require an integrated approach to achieve the development of high-performance electronic devices based on 2D materials. In this work, we present semiconducting PtSe2 field effect transistors with all-van-der-Waals electrode and dielectric interfaces. We use graphite contacts, which enable high ION/IOFF ratios up to 109 with currents above 100 μA μm-1 and mobilities of 50 cm2 V-1 s-1 at room temperature and over 400 cm2 V-1 s-1 at 10 K. The devices exhibit high stability with a maximum hysteresis width below 36 mV nm-1. The contact resistance at the graphite-PtSe2 interface is found to be below 700 Ω μm. Our results present PtSe2 as a promising candidate for the realization of high-performance 2D circuits built solely with 2D materials.
Details
Original language | English |
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Pages (from-to) | 6529-6537 |
Number of pages | 9 |
Journal | Nano Letters |
Volume | 24.2024 |
Issue number | 22 |
DOIs | |
Publication status | Published - 24 May 2024 |