Synthesis of Transition Metal Disulfides with Liquid Ammonium Sulfide as a Reliable Sulfur Precursor

Title
Synthesis of Transition Metal Disulfides with Liquid Ammonium Sulfide as a Reliable Sulfur Precursor
Authors
김수민Soo Ho ChoiChang Seok OhStephen BoandohWoochul YangKi Kang Kim
Issue Date
2019-05
Publisher
Applied Science and Convergence Technology
Citation
VOL 28, NO 3-65
Abstract
We introduce liquid ammonium sulfide as a reliable and carbon-free sulfur precursor for synthesizing large-area transition metal disulfides (TMdS) in chemical vapor deposition. The flux of sulfur during TMdS growth is precisely controlled by passing a known amount of carrier gas through a bubbling system containing liquid ammonium sulfide. However, controlling the flux of sulfur through the conventional evaporation of sulfur powder using a heating belt remains a challenge. By achieving controllability of sulfur flux, we study growth kinetics such as nucleation density and growth rate. Furthermore, the continuous supply of the sulfur precursor results in the growth of a large-area monolayer and a few layers of MoS2 film. In addition, we present the feasibility of ammonium sulfide as an effective and clean precursor for the growth of a wide range of TMdS, thus enabling it to serve as a universal sulfur precursor.
URI
http://pubs.kist.re.kr/handle/201004/70456
ISSN
2288-6559
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE