Molybdenum Ditelluride (MoTe2) Powder and Crystal

Molybdenum Ditelluride MoTe₂ (α-MoTe₂), CAS number 12058-20-7, is a semiconductor with an indirect band gap of around 1.0 eV in bulk crystal or powder form, and a direct band-gap of about 1.1 eV in monolayer films. MoTe₂ has a characteristic layered structure direct band-gap that extends to near infrared (NIR) wavelengths. Combined with the advantages of wet chemical exfoliation, MoTe₂ has great potential for electronics - especially in photovoltaic technologies.

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≥99.999% Molybdenum Ditelluride

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Powder & Crystal

Powder & Crystal forms of MoTe2

Single or few-layer MoTe₂ nanosheets can be created via liquid exfoliation under ambient conditions. Exfoliated nanosheets can be be fabricated into layered films and deposited onto a range of different substrates. MoTe₂ nanosheets can be used in high-performance sodium-ion batteries, as a electrocatalyst in hydrogen evolution reactions (HER), and in photovoltaic solar cells.

MoTe₂ is also semi-metallic, with bulk MoTe₂ exhibiting superconductivity at a transition temperature of 0.10 K.

We supply low price molybdenum ditelluride in several different forms for a range of applications.

Molybdenum Ditelluride Powder

Can be used for preparation of molybdenum ditelluride nanoplates and ultrathin films

Available in quantities 500 mg of 1 g

≥99.995% purity

From £220

Molybdenum Ditelluride Crystals by Size

Can be used to produce single or few-layer molybdenum ditelluride sheets via mechanical or liquid exfoliation

Small (≥10 mm²) or medium (≥25 mm²) crystals available*

≥99.999% purity

From £460

*Typical representative size, areas/dimensions may vary

Bulk single Molybdenum ditelluride crystal is most commonly used as sources from which single or few-layer sheets can be obtained via either mechanical or liquid exfoliation. Single molybdenum ditelluride crystal or films produced from such crystals are suitable for study using atomic force microscopy or transmission electron microscopy

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Few-layer MoTe₂ nanosheets and nanoparticles can also obtained from molybdenum ditelluride powder by liquid-exfoliation using sodium cholate salt as surfactant. 

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• High purity molybdenum ditelluride powder and crystals
• Sold according to weight or size respectively
• Low price with free worldwide shipping on qualifying orders

Structure of Molybdenum Ditelluride 

Molybdenum Ditelluride MoTe₂ (α-MoTe₂) is a semiconductor with an indirect band gap of around 1.0 eV in bulk crystal or powder form, and a direct band-gap of about 1.1 eV in monolayer films. Like MoS₂ and other 2D materials, MoTe₂ has a layered structure. It is composed of hexagonal sheets of molybdenum atoms - these are located between two hexagonal planes of tellurium atoms. Individual sheets are held together by weak Van der Waals forces, and are stacked with 2H symmetry. 

Properties of Molybdenum Ditelluride

After exfoliation of Molybdenum ditelluride crystal or powder, Molybdenum ditelluride typically has the following properties:

• Hexagonal 2H-MoTe₂ (space group:  P63/mmc)
• 2H-MoTe₂ (α-MoTe₂) is a semiconductor with an indirect band gap of around 1.0 eV in bulk crystal or powder form
• Orthorhombic (Td) MoTe2 is a type II Weyl semimetal
• Bulk MoTe₂ exhibiting superconductivity at a transition temperature of 0.10 K.

Applications of Molybdenum Ditelluride

Molybdenum ditelluride single crystal can be used to prepare monolayer and few-layer MoTe₂ by mechanical or liquid exfoliation, and Molybdenum ditelluride powder is suitable for liquid chemical exfoliation to prepare MoTe₂ nanosheets and nanoparticles down to few-layer films.

With a relatively small band gap (1.1 eV) compared to other group VI TMDCs, single or few-layer MoTe₂ is a promising candidate in a range of applications, including ambipolar transistors. Due to its low band-gap, it is also of interest in optoelectronic technologies that span the visible to near-infrared range.

Molybdenum ditelluride (MoTe₂) single crystals can be used to prepare monolayer and few-layer MoTe₂ by mechanical or liquid exfoliation. 

Molybdenum ditelluride powder is suitable for liquid chemical exfoliation to prepare MoTe₂ nanosheets and nanoparticles down to few-layer films. Bulk MoTe₂ exhibits superconductivity with a transition temperature of 0.10 K however potassium intercalated molybdenum ditelluride becomes superconducting below 2.8 K.

Monolayer or few-layer 2D MoTe₂ has a direct band-gap and finds applications in transistors, and photovoltaics. MoTe₂ nanosheets prepared by chemical exfoliation have a band-gap at near-infrared (NIR) wavelengths. Thus, they are of direct interest in photo-detector devices.

MoTe₂ nanosheets can be used in high-performance sodium-ion batteries, as a electrocatalyst in hydrogen evolution reactions (HER), and in photovoltaic solar cells.

Literature and Reviews

• Exfoliated multilayer MoTe2 field-effect transistors, S. Fathipour et al., Appl. Phys. Lett. 105, 192101 (2014); doi: 10.1063/1.4901527.
• Optical Properties and Band Gap of Single- and Few-Layer MoTe2
  Crystals, C. Ruppert et al., Nano Lett., 14, 6231−6236 (2014); DIO: 10.1021/nl502557g.
• Two-dimensional MoTe2 materials: From synthesis, identification, and charge transport to electronics applications, Y. Chang et al, Jpn. J. Appl. Phys. 55 1102A1 (2016); DIO: 10.7567/JJAP.55.1102A1.
• Unified Description of the Optical Phonon Modes in N‑Layer MoTe2, G. Froehlicher et al., Nano Lett., 15, 6481−6489 (2015); DOI: 10.1021/acs.nanolett.5b02683.
• Fast MoTe2 Waveguide Photodetector with High Sensitivity at Telecommunication Wavelengths, P. Ma et al., ACS Photonics, 5, 1846−1852 (2018); DOI: 10.1021/acsphotonics.8b00068.
• Superconductivity in Weyl semimetal candidate MoTe2, Y. Qi et al., Nat. Commun., 7:11038 (2016); DOI: 10.1038/ncomms11038.
• Temperature dependent Raman spectroscopic study of mono-, bi-, and tri-layer molybdenum ditelluride, J. Park et al., Appl. Phys. Lett. 107, 153106 (2015); doi: 10.1063/1.4934181.
• Room Temperature Semiconductor-Metal Transition of MoTe2 Thin Films Engineered by Strain, S. Song et al, Nano Lett., 16, 188-193 (2016); DOI: 10.1021/acs.nanolett.5b03481.
• Large-Area Synthesis of High-Quality Uniform Few-Layer MoTe2, L. Zhou et al., J. Am. Chem. Soc., 137, 11892-11895 (2015); DOI: 10.1021/jacs.5b07452.
• Nonlinear Saturable Absorption of Liquid-Exfoliated Molybdenum/Tungsten Ditelluride Nanosheets, D. Mao et al., Small, 12 (11), 1489–1497 (2016); DOI: 10.1002/smll.201503348.