[5p-PA1-1~82] 17 Nanocarbon Technology（Poster）

[5p-PA1-82] Gas adsorption-induced current variation across graphene/MoS₂ van der Waals heterojunction depending on bias and gate voltages

〇Hiroshi Tabata¹, Yuta Sato¹, Kouhei Oi¹, Osamu Kubo¹, Mitsuhiro Katayama¹ (1.Osaka Univ.)

Keywords:graphene, MoS2, heterojunction

The current across the graphene/MoS₂ van der Waals heterojunction is significantly reduced by NO₂ gas adsorption, and the current reduction ratio strongly depends on the bias and gate voltages. In this study, on the basis of a MSM model considering two Schottky barriers formed at the interfaces of the graphene/MoS₂ and the Ti electrode/MoS₂, we analyzed the change in the device characteristics induced by gas adsorption and investigated the mechanism.