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Molybdenum Tungsten Disulfide (MoWS2) Powder

CAS Number 109657-36-5

2D Semiconductor Materials, Low Dimensional Materials


Product Code M2141C1-500mg
Price £220 ex. VAT

MoWS2 high purity powder

Used to prepare quantum dot solutions and nano-platelets


Molybdenum tungsten disulfide (MoWS2), CAS number 109657-36-5, is a TMDC alloy. Alloying 2D TMDCs is an effective way of practically modulating the band gap. This is because alloys have good thermodynamic stability at room temperature.

MoWS2 high purity powder

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MoWS2 high purity powder

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Molybdenum Tungsten Disulfide (MoWS2) Powder Applications

Applications

Used to prepare quantum dot solutions and nano-platelets

Like MoS2 and WS2, MoWS2 has a hexagonal crystal structure, and bulk alloys are formed by stacking monolayer alloy together via van der Waals interactions. Each  monolayer contains one MoW plane sandwiched by two S planes, represented as an S-MoW-S layer.

Structure of Molybdenum Disulfide Powder

Molybdenum tungsten disulfide structure
The crystal structure of molybdenum tungsten disulfide (MoWS2)

Applications of Molybdenum Disulfide Powder

With a tunable band gap, band edge position, and carriers’ effective mass, thin-layer nanosheets of MoWS2 have applications in electrochemistry and possess superior hydrogen evolution reaction performance. It has also been used in the development of high-performance optical switching, Q-switching, mode-locking, optical limiting, and optoelectronic devices.

Synthesis

Molybdenum tungsten disulfide powder is obtained via the CVT method, with purity typically in excess of 99.995%.

Usage

Molybdenum tungsten disulfide powder is generally used to prepare MoWS2 quantum dot solutions and nano-platelets by liquid exfoliation assisted by sonication. High-purity MoWS2 powder can also be used in CV deposition to prepare high-quality monolayer films.

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Literature and Reviews

  • Towards band structure and band offset engineering of monolayer Mo(1−x)W(x)S2 via Strain, J.-S. Kim et al, 2D Mater. 5, 015008 (2018); doi: 10.1088/2053-1583/aa8e71.
  • Experimental and First-Principles Investigation of MoWS2 with High Hydrogen Evolution Performance, H. Li et al., ACS Appl. Mater. Interfaces 2016, 8, 29442−29451; DOI: 10.1021/acsami.6b09620.
  • Ordered and Disordered Phases in Mo1−xWxS2 Monolayer, W. Tan et al., Sci. Rep., 7:15124 (2017); DOI:10.1038/s41598-017-15286-9.
  • Substrate-free layer-number identification of two-dimensional materials: A case of Mo0.5W0.5S2 alloy, X. Qiao et al., Appl. Phys. Lett. 106, 223102 (2015); doi: 10.1063/1.4921911.
  • High pressure Raman study of layered Mo0.5W0.5S2 ternary compound, J. Kim et al., 2D Mater. 3, 025003 (2016); doi: 10.1088/2053-1583/3/2/025003.
  • Controllable synthesis of molybdenum tungsten disulfide alloy for vertically composition-controlledmultilayer, J. Song et al., Nat. Commun., 6:7817 (2015); DOI: 10.1038/ncomms8817.
  • Monolayers of WxMo1-xS2 alloy heterostructure with in-plane composition variations, S. Zheng et al., Appl. Phys. Lett. 106, 063113 (2015); doi: 10.1063/1.4908256.
  • Generation of microsecond pulses at 1645 nm with MoWS2 alloy, Z. Yan et al., Opt. Mater., 84, 371–374 (2018); doi: 10.1016/j.optmat.2018.07.042.
  • Nonlinear optical responses in two-dimensional transition metal dichalcogenide multilayer: WS2, WSe2, MoS2 and Mo0.5W0.5S2, S. Bikorimana et al., Opt. Express, 24 (18) 20685-20695 (2016); doi: 10.1364/OE.24.020685.

Technical Data

CAS Number 109657-36-5
Chemical Formula MoWS2
Molecular Weight 204.01 g/mol
Bandgap ~1.90 eV [1]
Preparation Synthetic - Chemical Vapour Transport (CVT)
Structure Hexagonal
Electronic Properties 2D Semiconductor
Melting Point N/A
Colour Black
Classification / Family Transition metal dichalcogenides (TMDCs) alloy, 2D semiconductor materials, Nano-electronics, Nano-photonics, Materials science

Product Details

Form Purity
Powder ≥99.995%

MSDS Document

Molybdenum tungsten disulfide MSDSMolybdenum tungsten disulfide powder

Pricing Table

Product Code Form Quantity Price
M2141C1 Powder 500 mg £220
M2141C1 Powder 1 g £360
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