(a) OM image of CVD grown monolayer MoS2 suspended over cylindrical cavities after transfer. (b) PL Spectroscopy of suspended monolayer MoS2. (c) AFM image of two suspended monolayer MoS2 devices. (d) Cross section of the two devices. Device (1) is pressurized due to showing the deflection just after taking it out form vacuum chamber.
MoS2 On Gold
Heterostructures of 2D materials have become a focal area due to their fantastic functional properties in various application such as flexible devices, electronic materials, energy storage, and membrane.
It was reported that sulfur and gold form a robust covalent bond. Therefore we assumed that assembly of monolayer MoS2 and Gold thin film could generate a strong bonding in their interface. To proof, we decided to measure the adhesion energy of the MoS2 and Gold using the mechanical blister test.
After photolithography and etching cylindrical microcavities into a SiOx/Si substrate, we suspended the MoS2 films by the transfer of CVD grown MoS2 using PMMA transfer method. Then we characterized the devices by Raman Spectrometer and Also Atomic Force Microscopy.
