Journal
ACS NANO
Volume 14, Issue 2, Pages 1951-1957Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.9b08390
Keywords
transition metal dichalcogenides; nanoribbons; ballistic transport; scanning tunneling microscopy; first-principles calculations; Raman spectroscopy; FET device
Categories
Funding
- Gordon and Betty Moore Foundation's EPiQS Initiative [GBMF441]
Ask authors/readers for more resources
We report atomically precise pentagonal PdSe2 nanoribbons (PNRs) fabricated on a pristine PdSe2 substrate with a hybrid method of top-down and bottom-up processes. The PNRs form a uniform array of dimer structure with a width of 2.4 nm and length of more than 200 nm. In situ four-probe scanning tunneling microscopy (STM) reveals metallic behavior of PNRs with ballistic transport for at least 20 nm in length. Density functional theory calculations produce a semiconducting density of states of isolated PNRs and find that the band gap narrows and disappears quickly once considering coupling between PNR stacking layers or interaction with the PdSe2 substrate. The coupling of PNRs is further corroborated by Raman spectroscopy and field-effect transistor measurements. The facile method of fabricating atomically precise PNRs offers an air-stable functional material for dimensional control.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available