Publication detail

The effect of metallic substrates on the optical properties of monolayer MoSe2

GRZESZCZYK, M. BARTOŠ, M. MOLAS, M. NOGAJEWSKI, K. BOGUCKI, A. FAUGERAS, C. KOSSACKI, P. BABINSKI, A. POTEMSKI, M.

Original Title

The effect of metallic substrates on the optical properties of monolayer MoSe2

Type

journal article in Web of Science

Language

English

Original Abstract

Atomically thin materials, like semiconducting transition metal dichalcogenides (S-TMDs), are highly sensitive to the environment. This opens up an opportunity to externally control their properties by changing their surroundings. Photoluminescence and reflectance contrast techniques are employed to investigate the effect of metallic substrates on optical properties of MoSe2 monolayer (ML). The optical spectra of MoSe2 MLs deposited on Pt, Au, Mo and Zr have distinctive metal-related lineshapes. In particular, a substantial variation in the intensity ratio and the energy separation between a negative trion and a neutral exciton is observed. It is shown that using metals as substrates affects the doping of S-TMD MLs. The explanation of the effect involves the Schottky barrier formation at the interface between the MoSe2 ML and the metallic substrates. The alignment of energy levels at the metal/semiconductor junction allows for the transfer of charge carriers between them. We argue that a proper selection of metallic substrates can be a way to inject appropriate types of carriers into the respective bands of S-TMDs.

Keywords

transition; dichalcogenides

Authors

GRZESZCZYK, M.; BARTOŠ, M.; MOLAS, M.; NOGAJEWSKI, K.; BOGUCKI, A.; FAUGERAS, C.; KOSSACKI, P.; BABINSKI, A.; POTEMSKI, M.

Released

18. 3. 2020

Publisher

Springer Nature

Location

LONDON

ISBN

2045-2322

Periodical

Scientific Reports

Year of study

10

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

7

Pages count

7

URL

https://www.nature.com/articles/s41598-020-61673-0

Full text in the Digital Library

http://hdl.handle.net/11012/195751

BibTex

@article{BUT165375,
  author="Magdalena {Grzeszczyk} and Miroslav {Bartoš} and Maciej {Molas} and Karol {Nogajewski} and Aleksander {Bogucki} and Clément {Faugeras} and Piotr {Kossacki} and Adam {Babinski} and Marek {Potemski}",
  title="The effect of metallic substrates on the optical properties of monolayer MoSe2",
  journal="Scientific Reports",
  year="2020",
  volume="10",
  number="1",
  pages="1--7",
  doi="10.1038/s41598-020-61673-0",
  issn="2045-2322",
  url="https://www.nature.com/articles/s41598-020-61673-0"
}