Issue 39, 2020, Issue in Progress

Quantification of defects engineered in single layer MoS2

Abstract

Atomic defects are controllably introduced in suspended single layer molybdenum disulfide (1L MoS2) using helium ion beam. Vacancies exhibit one missing atom of molybdenum and a few atoms of sulfur. Quantification was done using a Scanning Transmission Electron Microscope (STEM) with an annular detector. Experimentally accessible inter-defect distance was employed to measure the degree of crystallinity in 1L MoS2. A correlation between the appearance of an acoustic phonon mode in the Raman spectra and the inter-defect distance was established, which introduces a new methodology for quantifying defects in two-dimensional materials such as MoS2.

Graphical abstract: Quantification of defects engineered in single layer MoS2

Supplementary files

Article information

Article type
Paper
Submitted
15 Apr 2020
Accepted
06 Jun 2020
First published
16 Jun 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 22996-23001

Quantification of defects engineered in single layer MoS2

F. Aryeetey, T. Ignatova and S. Aravamudhan, RSC Adv., 2020, 10, 22996 DOI: 10.1039/D0RA03372C

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements