Pressure-mediated contact quality improvement between monolayer MoS2 and graphite*

Project supported by the National Key R&D Program, China (Grant No. 2016YFA0300904), the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (Grant No. QYZDB-SSW-SLH004), the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant Nos. XDPB06 and XDB07010100), and the National Natural Science Foundation of China (Grant Nos. 61734001 and 51572289).

Liao Mengzhou1, 2, Du Luojun1, 2, 6, Zhang Tingting1, 2, 3, Gu Lin1, 2, Yao Yugui3, Yang Rong1, 2, 4, Shi Dongxia1, 2, 4, †, Zhang Guangyu1, 2, 4, 5, ‡
       

Explanation of pressure-enhanced contact quality between MoS2 and graphite under pressure. (a) IV curves of metal tip/transferred MoS2/ITO junction under different pressure. (b) Schottky barrier height of metal tip/transferred MoS2/ITO junction as function of pressure. (c) Schematic illustration of metal tip–MoS2–graphite contact. The band structure at negative sample bias of (d) upstretched MoS2 and (e) stretched ∼2.7% MoS2.