MoS2 (2H Molybdenum Disulfide)
MoS2 (2H phase) is a semiconductor with an indirect band gap of 1.2 eV. Monolayer MoS2 has a band gap of ~1.8 eV. Molybdenum Disulfide is used for example as a photodetector and transistor. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. MoS2 belongs to the group-VI transition metal dichalcogenides (TMDC).
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The 2H phase MoS2 crystals produced at HQ Graphene have a typical lateral size of ~0.8-1 cm, hexagonal/rectangular shaped and have a metallic appearance. We produce both n-type and p-type MoS2, having a typical charge carrier density of ~1015cm-3 at room temperature. A selection of peer review publications on the MoS2 crystals we sell can be found below.
|Crystal size||~10 mm|
|Electrical properties||Semiconductor, n-type (p-type is also available)|
|Unit cell parameters||a = b = 0.315 nm, c = 1.229 nm, α = β = 90°, γ = 120°|
|Monolayer properties||Link to C2DB containing calculated properties|
|Characterized by||XRD, Raman, EDX, Hall measurement|
|More information?||Please contact us by email or phone|
The single crystal MoS2 is characterized using:XRD: single crystal and powder X-ray diffraction (D8 Venture Bruker and D8 Advance Bruker)
EDX: Energy-dispersive X-ray spectroscopy for stoichiometric analysis
Raman: 785 nm Raman system
Hall measurement: Extraction of charge carrier density and doping in the Van der Pauw geometry.
Raman, XRD and EDX on 2H MoS2:
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HQ Graphene Wiki on:
2H-MoS2 (Molybdenum Disulfide)
1. Beom Seo Kim et al., "Determination of the band parameters of bulk 2H-MX2 (M = Mo, W; X = S, Se) by angle-resolved photoemission spectroscopy", Nature/Scientific Reports 6, Article number: 36389 (2016), link to article:
2. Yan Chen et al., "Optoelectronic Properties of Few-layer MoS2 FET Gated by Ferroelectric Relaxor Polymer", ACS Appl. Mater. Interfaces, 2016, 8 (47), pp 32083-32088, link to article: