Graphene-Contacted Ultrashort Channel Monolayer MoS<sub>2</sub> Transistors.

Xie, Li; Liao, Mengzhou; Wang, Shuopei; Yu, Hua; Du, Luojun; Tang, Jian; Zhao, Jing; Zhang, Jing et al. · Adv Mater · 2017

basic_science · Level V

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Abstract

2D semiconductors are promising channel materials for field-effect transistors (FETs) with potentially strong immunity to short-channel effects (SCEs). In this paper, a grain boundary widening technique is developed to fabricate graphene electrodes for contacting monolayer MoS<sub>2</sub> . FETs with channel lengths scaling down to ≈4 nm can be realized reliably. These graphene-contacted ultrashort channel MoS<sub>2</sub> FETs exhibit superior performances including the nearly Ohmic contacts and excellent immunity to SCEs. This work provides a facile route toward the fabrication of various 2D material-based devices for ultrascaled electronics.