BROWSE

Related Scientist

Researcher

나노 구조 물리 연구단
나노구조물리 연구단
more info

Role of alkali metal promoter in enhancing lateral growth of monolayer transition metal dichalcogenides

Cited 3 time in webofscience Cited 0 time in scopus
177 Viewed 86 Downloaded
Title
Role of alkali metal promoter in enhancing lateral growth of monolayer transition metal dichalcogenides
Author(s)
Hyun Kim; Gang Hee Han; Seok Joon Yun; Jiong Zhao; Dong Hoon Keum; Hye Yun Jeong; Thuc Hue Ly; Youngjo Jin; Ji-Hoon Park; Byoung Hee Moon; Sung-Wng Kim; Young Hee Lee
Publication Date
2017-09
Journal
NANOTECHNOLOGY, v.28, no.36, pp.36LT01 -
Publisher
IOP PUBLISHING LTD
Abstract
Synthesis of monolayer transition metal dichalcogenides (TMDs) via chemical vapor deposition relies on several factors such as precursor, promoter, substrate, and surface treatment of substrate. Among them, the use of promoter is crucial for obtaining uniform and large-area monolayer TMDs. Although promoters have been speculated to enhance adhesion of precursors to the substrate, their precise role in the growth mechanism has rarely been discussed. Here, we report the role of alkali metal promoter in growing monolayer TMDs. The growth occurred via the formation of sodium metal oxides which prevent the evaporation of metal precursor. Furthermore, the silicon oxide substrate helped to decrease the Gibbs free energy by forming sodium silicon oxide compounds. The resulting sodium metal oxide was anchored within such concavities created by corrosion of silicon oxide. Consequently, the wettability of the precursors to silicon oxide was improved, leading to enhance lateral growth of monolayer TMDs. © 2017 IOP Publishing Ltd Printed in the UK
URI
https://pr.ibs.re.kr/handle/8788114/3936
ISSN
0957-4484
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
Role of alkali_Nanotechnology_Young Hee Lee.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