Presentation Information
[16p-PA7-39]Water-Induced Operational Instability at Electrode Contacts in MoS2 FETs
〇(M1)Taiga Sakai1, Ryo Nouchi1 (1.Osaka Metro. Univ.)
Keywords:
transition metal dichalcogenide,electrode-contact effect,environmental effect
FETs based on 2D semiconductors exhibit hysteresis and operational instability due to water molecules in the ambient environment. By comparing two- and four-terminal measurements, we confirmed that the instability is enhanced in air compared with that under a nitrogen atmosphere. Furthermore, the instability observed in four-terminal measurements is smaller than that in two-terminal measurements, suggesting a significant contribution from water-induced processes occurring near the electrode contacts. These results demonstrate that separating the contributions of the channel and the electrode contacts is essential for understanding water-induced operational instability.