Interlayer Transition and Infrared Photodetection in Atomically Thin Type-II MoTe₂/MoS₂ van der Waals Heterostructures.

There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

Abstract

We demonstrate the type-II staggered band alignment in MoTe2/MoS2 van der Waals (vdW) heterostructures and an interlayer optical transition at ∼1.55 μm. The photoinduced charge separation between the MoTe2/MoS2 vdW heterostructure is verified by Kelvin probe force microscopy (KPFM) under illumination, density function theory (DFT) simulations and photoluminescence (PL) spectroscopy. Photoelectrical measurements of MoTe2/MoS2 vdW heterostructures show a distinct photocurrent response in the infrared regime (1550 nm). The creation of type-II vdW heterostructures with strong interlayer coupling could improve our fundamental understanding of the essential physics behind vdW heterostructures and help the design of next-generation infrared optoelectronics.

Related collections

Author and article information

Journal

Journal ID (iso-abbrev): ACS Nano

Title: ACS nano

Publisher: American Chemical Society (ACS)

ISSN (Electronic): 1936-086X

ISSN (Print): 1936-0851

Publication date (Electronic): Mar 22 2016

Volume: 10

Issue: 3

Affiliations

[1 ] National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences , Shanghai 200083, China.

[2 ] Hefei National Laboratory for Physical Sciences at the Microscale (HFNL) and Department of Physics, University of Science and Technology of China , Hefei, Anhui 230026, China.

[3 ] State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences , Beijing 100083, China.

[4 ] Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore.

[5 ] Department of Chemistry and Biochemistry, University of California , Los Angeles, California 90095, United States.

[6 ] Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, China.

Article

DOI: 10.1021/acsnano.6b00980

PubMed ID: 26950255

SO-VID: cec22afc-4e0f-46d8-9c55-b5dc4877fdf6

History

Keywords: van der Waals heterostructure,interlayer transition,type-II band alignment,MoS2,MoTe2

Data availability:

Keywords: van der Waals heterostructure, interlayer transition, type-II band alignment, MoS2, MoTe2

Interlayer Transition and Infrared Photodetection in Atomically Thin Type-II MoTe₂/MoS₂ van der Waals Heterostructures.

Read this article at

Abstract

Related collections

4open

Author and article information

Journal

Affiliations

Article

History

Comments

Comment on this article

Similar content 157

Cited by 137