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Product Code M2108A10
Price $575 ex. VAT

MoSe2 Crystal, one of the best TMDCs due to large size and high conductivity

High purity (≥99.995%) and available online for fast, secure dispatch

Technical Data | MSDS | Structure | Literature and Reviews | Related Products | Resources and Support

Like most of the transition metal dichalcogenides and graphite, molybdenum diselenide (MoSe2), CAS number 12058-18-3, has a two-dimensional layered structure - with the individual layers stacked together by weak van der Waals interactions. Due to the larger size and better conductivity of selenium over sulphur, MoSeis one of the best TMDCs of metallic nature. This also provides a great opportunity for hosting counterions in electrochemical energy storage systems (such as lithium-ion and sodium-ion batteries).

High Purity Molybdenum Diselenide

High Purity

High purity (≥99.995%)

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Low Cost Molybdenum Diselenide

Low Cost

Low Cost Molybdenum Diselenide

Versatile MoSe2


Applications in transistors, photo-detectors, and photovoltaics.

Like MoS2, MoSeundergoes changes from indirect to direct band-gap transitions when bulk material (such as the bulk crystal) is reduced to monolayer film. However, unlike MoS2, few-layer MoSeflakes possess a nearly degenerate indirect and direct band-gap. An increase in temperature/pressure can effectively push the system toward the quasi-2D limit by reducing the coupling between the layers. MoS2, on the other hand, has indirect and direct band-gaps that are well-separated in energy - and hence, far from degenerate.

Compared to MoS2, MoSe2 exhibits higher electrical conductivity.

Technical Data

CAS Number 12058-18-3
Chemical Formula MoSe2
Molecular Weight 253.86 g/mol
Bandgap 1.41 - 1.58 eV [1]
Preparation Synthetic - Chemical Vapour Transport (CVT)
Structure Hexagonal
Electronic Properties 2D semiconductor
Melting Point >1,300 °C
Colour Black/Dark brown
Synonyms Molybdenum(IV) selenide, Molybdenum selenide
Classification / Family Transition metal dichalcogenides (TMDCs), 2D semiconductor Materials, Nano-electronics, Nano-photonics, Electrochemical energy storage system, Materials science

Product Details

Form Purity
Crystal ≥99.995%

Pricing Table

Product Code Form Size* Quantity (EA) Price
M2108A10 Crystal Small (≥10 mm2) 1 £460
M2108A25 Crystal Medium(≥25 mm2) 1 £760
M2108A00 Crystal Large** (≥100 mm2) 1 £1750

*Typical representative size, areas/dimensions may vary

**Item with a lead time of 2 - 3 weeks, please contact us for more information

MSDS Document

Molybdenum diselenide crystal MSDSMolybdenum diselenide crystal

Structure of Molybdenum Diselenide Crystal

MoSe2 Molybdenum diselenide crystal structure
Hexagonal structure of Molybdenum Diselenide (MoSe2)

Literature and Reviews

  • Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2, Y. Zhang et al., Nat. Nanotech., 9, 111–115 (2014); DOI: 10.1038/NNANO.2013.277.
  • Large-Area Synthesis of Monolayer and Few-Layer MoSe2 Films on SiO2 Substrates, X. Lu et al., Nano Lett., 14 (5), 2419–2425 (2014); DOI: 10.1021/nl5000906.
  • High-Mobility Transistors Based on Large-Area and Highly Crystalline CVD-Grown MoSe 2 Films on Insulating Substrates, J-S. Rhyee et al., Adv. Mater., 28, 2316–2321 (2016); DOI: 10.1002/adma.201504789.

We stock a wide range of 2D materials available to purchase online. Please contact us if you cannot find what you are looking for.

Resources and Support

Viscoelastic Transfer of 2D Material Using PDMS

Viscoelastic transfer using polydimethylsiloxane (PDMS) stamps is one of the methods used for the deterministic placement of 2D materials and the fabrication of van der Waals heterostructures. It relies on the viscoelasticity of PDMS, which behaves as an elastic solid on short time scales, but as a viscous fluid on long time scales.

Learn more...
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