An Effective Route for the Growth of Multilayer MoS2 by Combining Chemical Vapor Deposition and Wet Chemistry

Download

3233252.pdf

Date

2022-02-01

Author

Almohaimeed, Ziyad M.
Karamat, Shumaila
Akram, Rizwan
Sarwar, Saira
Javaid, Asad
Oral, Ahmet

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

43
views

17
downloads

Molybdenum disulfide (MoS2) is an actively pursuing material of the 2D family due to its semiconducting characteristics, making it a potential candidate for nano and optoelectronics application. MoS2 growth from molybdenum and sulphur precursors by chemical vapor depositions (CVD) is used widely, but molybdates' conversion into MoS2 via CVD is overlooked previously. Direct growth of MoS2 on the desired pattern not only reduces the interfacial defects but also reduces the complexities in device fabrication. In this work, we combine the wet synthesis and chemical vapor deposition method where sodium molybdate and L-cysteine are used to make a solution. With the dip coating, the mixture is coated on the substrates, and then, chemical vapor deposition is used to convert the chemicals into MoS2. Raman spectroscopy revealed the presence of oxysulphides (peaks number value) other than A(1g) and E-2g(1), where heat treatment was performed in the presence of Ar gas flow only. On the other hand, the films reducing in the presence of sulphur and argon gas promote only A(1g) and E-2g(1) peaks of MoS2, which confirms complete transformation. XRD diffraction showed a very small change in the diffraction peaks and value of strain, whereas SEM imaging showed the flakes formation for MoS2 samples which were heated in the presence of sulphur. X-ray photoelectron spectroscopy is also performed for the chemical composition and to understand the valence state of Mo, S, and O and other species.

URI

https://hdl.handle.net/11511/96964

Journal

ADVANCES IN CONDENSED MATTER PHYSICS

DOI

https://doi.org/10.1155/2022/3233252

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

A new ethanol biosensor based on polyfluorene-g-poly(ethylene glycol) and multiwalled carbon nanotubes Bekmezci, Siddika Aybuke; SÖYLEMEZ, SANİYE; Yilmaz, Gorkem; Udum, Yasemin A.; Yağcı, Yusuf; Toppare, Levent Kamil (Elsevier BV, 2020-01-05) Functionalization of the conjugated polymers has gained considerable interest in the biomedical engineering and biosensing applications as distinct properties can be imparted to the corresponding pristine analogues. In the present work, we report a novel sensing platform for the quantification of ethanol through a macromolecular design involving polyfluorene-g-poly(ethylene glycol) (PF-g-PEG) and multiwalled carbon nanotubes (MWCNTs). First, poly(ethylene glycol) with fluorene functionality (PEG-FL) was syn...
A Novel and Effective Surface Design: Conducting Polymer/beta-Cyclodextrin Host-Guest System for Cholesterol Biosensor SOYLEMEZ, Saniye; HACIOGLU, Serife O.; KESIK, Melis; UNAY, Hande; Çırpan, Ali; Toppare, Levent Kamil (2014-10-22) The combination of supramolecules and conducting polymers (CPs) has gained much attention for the development of new immobilization matrices for biomolecules. Herein, an amperometric biosensor based on a novel conducting polymer, poly(2-(2-octyldodecyl)-4,7-di(selenoph-2-yl)-2H-benzo[d][1,2,3]triazole)) (PSBTz) and beta-cyclodextrin (beta-CD) for the detection of cholesterol, was constructed. The PSBTz film with beta-CD was deposited on a graphite electrode by electropolymerization technique to achieve a su...
A novel approach for the fabrication of a flexible glucose biosensor: The combination of vertically aligned CNTs and a conjugated polymer GOKOGLAN, Tugba Ceren; SOYLEMEZ, Saniye; KESİK, Melis; DOGRU, Itir Bakis; TUREL, Onur; YÜKSEL, Recep; Ünalan, Hüsnü Emrah; Toppare, Levent Kamil (2017-04-01) A novel flexible glucose biosensor using vertically aligned carbon nanotubes (VACNT) and a conjugated polymer (CP) was fabricated. A scaffold based on VACNT grown on aluminum foil (VACNT-Al foil) with poly (9,9-di-(2-ethylhexyl)-fluorenyl-2,7-diyl)-end capped with 2,5-diphenyl-1,2,4-oxadiazole (PFLO) was used as the immobilization matrix for the glucose biosensor. Glucose oxidase (GOx) was immobilized on a modified indium tin oxide (ITO) coated polyethylene terephthalate (PET) electrode surface. The biosens...
A computational framework of configurational-force-driven brittle fracture based on incremental energy minimization MIEHE, CHRISTIAN; Gürses, Ercan; BIRKLE, MANUEL (Springer Science and Business Media LLC, 2007-06-01) A variational formulation of quasi-static brittle fracture in elastic solids at small strains is proposed and an associated finite element implementation is presented. On the theoretical side, a consistent thermodynamic framework for brittle crack propagation is outlined. It is shown that both the elastic equilibrium response as well as the local crack evolution follow in a natural format by exploitation of a global Clausius-Planck inequality. Here, the canonical direction of the crack propagation associate...
Theoretical electronic spectra for models having ferredoxin-core Türker, Burhan Lemi (2002-10-31) Ferredoxin-core model [Fe4S4] type iron-sulfur cluster having four cysteine moieties in the amide form, has been considered theoretically for electronic excitation spectrum. The neutral as well as the -/+ 2 charged forms of the model have been investigated within the restrictions of ZINDO/S (RHF) approach involving configuration interaction considerations. The charged forms, especially the negative one exhibited some bathochromic shift and hyperchromic effect.

Citation Formats

Z. M. Almohaimeed, S. Karamat, R. Akram, S. Sarwar, A. Javaid, and A. Oral, “An Effective Route for the Growth of Multilayer MoS2 by Combining Chemical Vapor Deposition and Wet Chemistry,” ADVANCES IN CONDENSED MATTER PHYSICS, vol. 2022, pp. 0–0, 2022, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/96964.