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Product Code M2115C1-500mg
Price $275 ex. VAT

Low price, high purity 2D metal tin(IV) selenide powder and crystals

For the development of next-generation electronics, optoelectronics, and nanotechnology


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


Tin(IV) selenide (also known as tin diselenide SnSe2), CAS number 20770-09-6, is a family member of two-dimensional layered transition metal dichalcogenides (TMDCs) semiconductors. Within each layer, every six selenium atoms are located at the corners of an octahedron, and feature an inversion symmetry (with respect to the central tin atom). The layered structure (bound by the weak Van der Waals forces) allows exfoliation in both solid and liquid forms to peel off layers from bulk crystals or powder.

High Purity 20770-09-6

High Purity

≥99.999% Crystal Purity

Worldwide shipping for 20770-09-6

Worldwide shipping

Quick and reliable shipping

Low Cost 20770-09-6

Low Cost

Low Cost Tin(IV) Selenide

Different Forms of Tin(IV) Selenide

Powder & Crystal

Different Forms of Tin(IV) Selenide

Outperforming most other 2D layered materials (such as MoS2 and WSe2), atomic layered SnSe2 exhibits high photoresponsivity and a very fast rise and fall response speed. This shows that few-layer SnSe2 is a promising active 2D material for electronic and optoelectronic applications.

SnSe2 is an earth-abundant semiconductor with an n-type binary nature. The band gap of SnSecan be tuned from bulk to few-layer thin films with a wide electromagnetic spectrum  range (from 1 - 2 eV). This makes it an attractive 2D material for various photoelectronic applications.

We supply low price tin(iv) selenide in several different forms for a range of applications.

Tin(IV) selenide powder

Tin(IV) Selenide Powder

Can be used for preparation of tin(IV) selenide nanoplates and ultrathin films

Sold by weight

≥99.995% purity

From £220

Tin(IV) selenide crystals by size

Tin(IV) Selenide Crystals by Size

Can be used to produce single or few-layer tin(IV) selenide sheets via mechanical or liquid exfoliation

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

≥99.999% purity

From £520

*Typical representative size, areas/dimensions may vary

Bulk single tin(IV) selenide crystal is most commonly used as sources from which single or few-layer sheets can be obtained via either mechanical or liquid exfoliation. 

Tin(IV) selenide powder can also be used to prepare SnSe2 nanosheets and nanoparticles by liquid-exfoliation (normally assisted by sonication). 

Technical Data

CAS Number 20770-09-6-1
Chemical Formula SnSe2
Molecular Weight 276.63 g/mol
Bandgap 1.07 - 1.69 eV
Preparation Synthetic - Chemical Vapour Transport (CVT)
Structure Hexagonal (2H)
Electronic Properties 2D semiconductor
Melting Point 650 °C
Colour Metallic black
Synonyms Tin diselenide, Stannic selenide
Classification / Family Transition metal dichalcogenides (TMDCs), 2D semiconductor materials, NIR band-gap, Nano-electronics, Nano-photonics, Transistors, Photovoltaics, Materials science

Product Details

Form Purity
Powder ≥99.995%
Crystal ≥99.999%

Pricing Table

Product Code Form Size/Weight* Price
M2115C1 Powder 500 mg £220
M2115C1 Powder 1 g £350
M2115A10 Crystal Small (≥10 mm2) £520 ea.
M2115A25 Crystal Medium (≥25 mm2) £850 ea.
M2115A00 Crystal Large (≥100 mm2) £1800 ea.

*Typical representative size, areas/dimensions may vary

Shipping is free for qualifying orders.

MSDS Documents


Tin disufide powder MSDSTin(IV) selenide powder

Tin disufide crystal MSDSTin(IV) selenide crystal

Structure of Tin(IV) Selenide


SnSe2 has been reported to have two different crystal structures: the 2H hexagonal phase, and the CdI2-type 1T phase. Currently, there is inconclusive evidence as to which phase is the most stable and frequently observed (2H-SnSe shown below). However, SnSe2 crystallises in the CdI2-type lattice.

Like most of the transitional metal dichalogenides (TMDCs), it is composed of two-dimensional Se-Sn-Se sheets stacked on top of one another. Within each layer, every six selenium atoms are located at the corners of an octahedron, and feature an inversion symmetry (with respect to the central tin atom). The layered structure (bound by the weak Van der Waals forces) allows exfoliation in both solid and liquid forms to peel off layers from bulk crystals or powder.

SnSe2 crystal structure
Top and side view of single-layer tin(IV) selenide (2H-SnSe2)

Literature and Reviews


  • Layer-dependent properties of SnS2 and SnSe2 novel two-dimensional materials, J. Gonzalez et al., Phys. Rev. B 94, 125443 (2016); DOI: 10.1103/PhysRevB.94.125443.
  • SnSe2 field-effect transistors with high drive current, Y. Su et al., Appl. Phys. Lett., 103, 263104 (2013); doi: 10.1063/1.4857495.
  • Temperature dependence of Raman shifts in layered ReSe2 and SnSe2 semiconductor nanosheets, A. Taube et al., Appl. Phys. Lett., 107, 013105 (2015); doi: 10.1063/1.4926508.

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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