Monolayer MoS2

Order Code: M861
MSDS sheet


(excluding Taxes)


General Information

CAS number 1317-33-5
Chemical formula MoS2
Molecular weight 160.07 g/mol
HOMO/LUMO/Bandgap HOMO = 6.39 eV, LUMO = 4.5 eV, Eg = 1.89 eV
Synonyms Molybdenum(4+) disulfide, molybdenum sulfide
Classification / Family

2D semiconducting materials, monolayer materials, thin-layered transition-metal dichalcogenides (TMDs), n-type semiconductors

Product Details

Purity 99.9%
single layer ratio 95%
Diameter 0.1~4 µm
Melting point 1,185 °C (dec. – lit.)
Density 5.06 g/cm³
Colour Black powder/granules

Chemical Structure

monolayer structure of WS2
Chemical structure of monolayer molybdenum disulfide (MoS2); CAS no. 1317-33-5.


Like tungsten disulfide (WS2) and graphite, crystalline lattice (lamella) structure materials, molybdenum disulfide (MoS2) is widely used as agents in lubricants and as stand-alone lubricants. These materials are used independently or in combination with other agents and metals (lead, copper) to achieve the desired results. Lamella lubricating powders have low shear forces between their crystalline lattice layers that minimise resistance between sliding surfaces.

Monolayer molybdenum disulphide (MoS2), also a family member of the atomically thin layered transition metal dichalcogenides (TMDs), has attracted great attention for its intriguing electrical and optical properties. It finds various applications in orgnic electronics such as solar cells, light emitting diodes and photosensors.

Monolayer MoS2 has a direct bandgap of ~1.9 eV while the Bulk MoS2 is generally an n-type indirect semiconductor with a bandgap of ~1.3 eV. Comparing with bulk MoS2 indirect semiconductor, monolayer MoS2 possesses high on/off ratio, controllable spin and valley polarisation, strong geometrical confinement of excitons and tunable photoluminescence.


sem image MoS2

SEM image of monolayer molybdenum disulfide (MoS2).

Literature and Reviews

  1. Electronic structure of a single MoS2 monolayer, E. S. Kadantsev et al., Sol State Commun., 152, 909–913 (2012); doi:10.1016/j.ssc.2012.02.005.
  2. Large-Area Epitaxial Monolayer MoS2, D. Dumcenco et al., ACS Nano, 9 (4), 4611–4620 (2015); DOI: 10.1021/acsnano.5b01281.
  3. Valley-selective circular dichroism of monolayer molybdenum disulphide, T. Cao et al., nat. commun., 3:887 (2012); DOI: 10.1038/ncomms1882.
  4. Mobility engineering and a metal–insulator transition in monolayer MoS2, B. Radisavljevic et al., Nat. Mater., 12, 815-820 (2013); DOI: 10.1038/NMAT3687.
  5. Light Generation and Harvesting in a van der Waals Heterostructure, O. Lopez-Sanchez et al., ACS Nano, 8 (3), 3042–3048 (2014); DOI: 10.1021/nn500480u.