Pricing
| Size | Product code | Size description* | Quantity (EA) | Price |
| Small | M2115A10 | >10 mm2 | 1 | £397.00 |
| Medium | M2115A25 | >25 mm2 | 1 | £637.00 |
| Large** | M2115A00 | >100 mm2 | 1 | £1370.00 |
*typical representative size, areas/dimensions may vary
** lead time for large crystal is 4-6 weeks
General Information
| CAS number | 20770-09-6 |
| Chemical formula | SnSe2 |
| Molecular weight | 276.63 g/mol |
| Bandgap | 1.07 - 1.69 eV [1] |
| Synonyms | Tin (IV) selenide, stannic selenide |
| Classification / Family | Transition metal dichalcogenides (TMDCs), 2D semiconductor materials, Nano-electronics, Nano-photonics, Materials science |
Product Details
| Form | Single crystal |
| Preparation | Synthetic - chemical vapour transport (CVT) |
| Purity | ≥ 99.999% |
| Structure | 2H Hexagonal |
| Electronic properties | 2D semiconductor |
| Melting point | 650 °C |
| Appearance | Brownish-yellow |
General Description
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, and characterised by strong covalent bonds between Se-Sn-Se atoms and weak interlayer Van der Waals bonds.
SnSe2 is an earth-abundant semiconductor with an n-type binary nature. The band gap of SnSe2 can 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.
Applications
In the form of single or few-layer thin films, exfoliated tin disulfide (SnSe2) nanosheets can be used to fabricate devices such as supercapacitors, photodetectors, field-effect transistors, and Esaki tunnel diodes (when combined with phosphorene), based on exfoliated flakes.
Synthesis
Tin diselenide (SnSe2) is manufactured using chemical vapour transport (CVT) crystallisation, with crystals having a purity in excess of 99.999%.
Usage
Tin diselenide (SnSe2) single crystals can be used to prepare monolayer and few-layer SnSe2 by mechanical or liquid exfoliation.
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.
- Few-layer SnSe2 transistors with high on/off ratios, T. Pei, et al., Appl. Phys. Lett., 108, 053506 (2016); doi: 10.1063/1.4941394.
- Synthesis and characterization of SnSe2 hexagonal nanoflakes, K. Liu et al., Mater. Lett., 63, 512–514 (2009); doi:10.1016/j.matlet.2008.10.054.
- Epitaxial 2D SnSe2/ 2D WSe2 van der Waals Heterostructures, K. Aretouli et al., ACS Appl. Mater. Interfaces, 8, 23222−23229 (2016); DOI: 10.1021/acsami.6b02933.
- Band Gap Engineering of Hexagonal SnSe2 Nanostructured Thin Films for Infra-Red Photodetection, E. Mukhokosi et al., Sci. Rep., 7: 15215 (2017); DOI:10.1038/s41598-017-15519-x.
To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.
About Ossila Founded in 2009 by organic electronics research scientists, Ossila aims to provide the components, equipment, and materials to enable intelligent and efficient scientific research and discovery. Over a decade on, we're proud to supply our products to over 1000 different institutions in over 80 countries globally. With decades of academic and industrial experience in developing organic and thin-film LEDs, photovoltaics, and FETs, we know how long it takes to establish a reliable and efficient device fabrication and testing process. As such, we have developed coherent packages of products and services - enabling researchers to jump-start their organic electronics development program. The Ossila Guarantee Free Worldwide Shipping Eligible orders ship free to anywhere in the world Fast Secure Dispatch Rapid dispatch on in-stock items via secure tracked courier services Quality Assured Backed up by our free two year warranty on all equipment Clear Upfront Pricing Clear pricing in over 30 currencies with no hidden costs Large Order Discounts Save 8% on orders over $10,300.00 and 10% on orders over $12,900.00 Expert Support Our in-house scientists and engineers are always ready to help Trusted Worldwide Great products and service. Have already recommended to many people. Dr. Gregory Welch, University of Calgary Wonderful company with reasonably priced products and so customer-friendly! Shahriar Anwar, Arizona State University The Ossila Team Prof. David Lidzey - Chairman As professor of physics at the University of Sheffield, Prof. David Lidzey heads the university’s Electronic and Photonic Molecular Materials research group (EPMM). During his career, David has worked in both academic and technical environments, with his main areas of research including hybrid organic-inorganic semiconductor materials and devices, organic photonic devices and structures and solution processed photovoltaic devices. Throughout his academic career, he has authored over 220 peer-reviewed papers. Dr. James Kingsley - Managing Director James is a co-founder and managing director of Ossila. With a PhD in quantum mechanics/nanotech and over 12 years’ experience in organic electronics, his work on the fabrication throughput of organic photovoltaics led to the formation of Ossila and the establishment of a strong guiding ethos: to speed up the pace of scientific discovery. James is particularly interested in developing innovative equipment and improving the accessibility of new materials for solution-processable photovoltaics and hybrid organic-inorganic devices. Dr. Alastair Buckley - Technical Director Alastair is a lecturer of Physics at the University of Sheffield, specialising in organic electronics and photonics. He is also a member of the EPMM research group with a focus on understanding and applying the intrinsic advantages of functional organic materials to a range of optoelectronic devices. Alastair’s experience has not been gained solely in academia; he previously led the R&D team at MicroEmissive Displays and therefore has extensive technical experience in OLED displays. He is also the editor and contributor of "Organic Light-Emitting Diodes" by Elsevier. Our Research Scientists Our research scientists and product developers have significant experience in the synthesis and processing of materials and the fabrication and testing of devices. The vision behind Ossila is to share this experience with academic and industrial researchers alike, and to make their research more efficient. By providing products and services that take the hard work out of the device fabrication process, and the equipment to enable accurate, rapid testing, we can free scientists to focus on what they do best - science. Customer Care Team The customer care team is responsible for the customer journey at Ossila. From creating and providing quotes, through to procurement and inventory management, the customer care team is devoted to providing first class customer service. The general day to day responsibilities of a customer care team member involves processing customers orders and price queries, answering customer enquiries, arranging the shipment of parcels and notifying customers of updates on their orders. Collaborations and Partnerships Please contact the customer care team for all enquires, including technical questions about Ossila products or for advice on fabrication and measurement processes. Location and Facilities Ossila is based at the Solpro Business Park in Attercliffe, Sheffield. We operate a purpose-built synthetic chemistry and device testing laboratory on site, where all of our high-purity, batch-specific polymers and other formulations are made. This is complemented by a dedicated suite of thin-film and organic electronics testing and analysis tools within the device fabrication cluster housed in a class 1000 cleanroom in the EPSRC National Epitaxy Facility in Sheffield. All our electronic equipment is manufactured on-site.
