MoSe2 (2H Molybdenum Diselenide)
MoSe2 (2H phase) is a semiconductor having an indirect band gap of ~1.1 eV. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. MoSe2 belongs to the group-VI transition metal dichalcogenides (TMDC).
To buy MoSe2 crystals please click here.
The 2H phase Molybdenum Diselenide crystals produced at HQ Graphene have a typical lateral size of ~0.8-1 cm, are hexagonal shaped and have a metallic appearance.
We produce both p-type and n-type MoSe2, having a typical charge carrier density of ~1015cm-3 at room temperature and the p-type ~1018cm-3 and higher.
A selection of peer review publications on the MoSe2 we sell can be found below.
| Crystal size | ~10 mm |
| Electrical properties | Semiconductor, n-type (p-type is also available) |
| Crystal structure | hexagonal |
| Unit cell parameters | a = b = 0.329 nm, c = 1.289 nm, α = β = 90°, γ = 120° |
| Monolayer properties |  Link to C2DB containing calculated properties |
| Type | Synthetic |
| Purity | >99.995 % |
| Characterized by | XRD, Raman, EDX, Hall measurement |
| More information? | Please contact us by email or phone |
The single crystal MoSe2 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 MoSe2:
Click on an image to zoom
HQ Graphene Wiki on:
2H-MoSe2 (2H phase Molybdenum Diselenide)
1. Weigao Xu et al., "Correlated fluorescence blinking in two-dimensional semiconductor heterostructures", Nature 541, 62-67 (2017), link to article:
http://www.nature.com/nature/journal/v541/n7635/full/nature20601.html
2. Tomasz Jakubczyk et al., "Correlated fluorescence blinking in two-dimensional semiconductor heterostructures", Nano Lett., 2016, 16 (9), pp 5333-5339, link to article:
http://pubs.acs.org/doi/abs/10.1021/acs.nanolett.6b01060
3. Beom Seo Kim et al., "Radiatively Limited Dephasing and Exciton Dynamics in MoSe2 Monolayers Revealed with Four-Wave Mixing Microscopy", Nature/Scientific Reports 6, Article number: 36389 (2016), link to article:
http://www.nature.com/articles/srep36389
4. Kangwon Kim et al., "Davydov Splitting and Excitonic Resonance Effects in Raman Spectra of Few-Layer MoSe2", ACS Nano 10, 8113-8120 (2016), link to article:
http://pubs.acs.org/doi/abs/10.1021/acsnano.6b04471
5. S. Dufferwiel et al. "Exciton-polaritons in van der Waals heterostructures embedded in tunable microcavities", Nature Communications 6, 8579 (2015), link to article:
http://www.nature.com/articles/ncomms9579?WT.ec_id=NCOMMS-20151010