BROWSE

Related Scientist

Researcher

나노 구조 물리 연구단
나노구조물리 연구단
more info

Phase conversion of chemically exfoliated molybdenum disulfide

Cited 4 time in webofscience Cited 0 time in scopus
194 Viewed 10 Downloaded
Title
Phase conversion of chemically exfoliated molybdenum disulfide
Author(s)
Jaesu Kim; Jun Suk Kim; Tae Soo Kim; Homin Choi; Jin Hee Lee; Hyun Jin Ji; Seong Chu Lim
Publication Date
2017-01
Journal
CURRENT APPLIED PHYSICS, v.17, no.1, pp.60 - 65
Publisher
ELSEVIER SCIENCE BV
Abstract
Multilayer MoS2 is exfoliated by Li treatment. A thin film of Li-treated MoS2 contains a large portion of 1T phases. This is attributed to the atomic structural change caused by Li insertion, which is investigated using X-ray photoelectron spectroscopy (XPS). In a phase recovery via thermal annealing at 523 K in air, we observe another phase, referred to as the relaxed 1T phase, with a slightly larger binding energy than the 1T phase. After annealing at 523 K in air, the peak intensity of the relaxed 1T phase is reduced, accompanying a strong MoOx peak and weak S 2s peak, according to XPS. This indicates that the annealing of Li-treated MoS2 in air yields sulfur vacancies that induce the oxidation of Mo. However, after annealing at 523 K in vacuum, no MoOx is observed, and the considerable peak intensity of the relaxed 1T phase remains, which starkly contrasts Raman-spectroscopy results supporting a full recovery from the 1T phase to the 2H phase. The absence of a gating effect of the Li-treated MoS2 device supports the possibility of an incomplete phase change of Li-treated MoS2 annealed in a vacuum. © 2016 Elsevier B.V. All rights reserved.
URI
https://pr.ibs.re.kr/handle/8788114/3201
ISSN
1567-1739
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
Phase conversion-CAP-Seong Chu Lim.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse