Abstract
MoS2 typically exhibits unconventional layer-thickness-dependent electronic properties. It also exhibits layer-dependent band structures including indirect-to-direct band transitions, owing to which the electronic and carrier transport properties of a lattice-mismatched, conducting, two-dimensional junction are distinct with the naturally stepwise junction behaving as a 1D junction. We found distinguishable effects at the interface of vertically stacked MoS2. The results revealed that misorientationally stacked layers exhibited significantly low junction resistance and independent energy bandgaps without bending owing to their effectively decoupled behavior. Further, phonon-assisted carriers dominantly affected the lattice-mismatched interface owing to its low junction resistance, as determined via low-temperature measurement. Our results could facilitate the realization of high-performance MoS2 transistors with small contact resistances caused by lattice mismatching.
Highlights
Two-dimensional (2D) semiconductor materials have recently received extensive attention because of their large bandgap[1,2,3,4,5,6,7,8,9,10]
The work function is obtained via scanning Kelvin probe microscopy (SKPM), while conduction-band minimum (CBM) and valence band maximum (VBM) values are from the density functional theory (DFT) calculation
The CBM decreases as the number of layers increases, while the VBM decreases
Summary
Two-dimensional (2D) semiconductor materials have recently received extensive attention because of their large bandgap[1,2,3,4,5,6,7,8,9,10]. Stepwise junction (NSJ) To understand the band alignment of the layerdependent MoS2 junction, we evaluated the layerdependent work function using SKPM (Fig. S4).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
