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Title: Metallicity of 2H-MoS2 induced by Au hybridization

Journal Article · · 2D Materials

Recent studies have shown that MoS2 can undergo a structural phase transition from the 2H to 1T' phase on Au substrates at moderate temperatures. In this study, we use ultraviolet and x-ray photoelectron spectroscopy, Raman and photoluminescence spectroscopy, and scanning tunneling microscopy/spectroscopy to probe the impact of annealing exfoliated, monolayer MoS2 on Au. Our results across multiple length scales indicate that 2H-MoS2 becomes hybridized with Au upon thermal annealing without inducing the 1T' structural phase and the bandgap can be modulated to zero width depending on the degree of hybridization. These results can be used to control the resistance of metal-MoS2 contacts at the atomic scale without introduction of defects or structural phase transitions and are important for devices such as memristors.

Research Organization:
Univ. of Central Florida, Orlando, FL (United States)
Sponsoring Organization:
USDOE Office of Science (SC); US Department of the Navy, Office of Naval Research (ONR)
Grant/Contract Number:
FG02-07ER46354
OSTI ID:
1800452
Journal Information:
2D Materials, Vol. 7, Issue 2; ISSN 2053-1583
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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