Rhenium Diselenide (ReSe2) Powder and Crystal

Rhenium diselenide (ReSe₂), CAS number 12038-64-1, belongs to the family of layered transition metal dichalcogenide (TMDC) semiconductors with layers bound by van der Waals forces. 

One of the striking physical properties of rhenium diselenide (ReSe₂) is that it has a stable distorted 1T phase (1T-ReSe₂) in which the underlying 1D chain arrangement of Re4 parallelograms leads to a strong in-plane anisotropy. The structural distortion causes weaker interlayer coupling, which makes its bulk material behave electronically and vibrationally like decoupled monolayers.

Due to its distorted structure (like its twin ReS₂), ReSe₂ has also proven to exhibit dramatic spatial-anisotropy optical response, making it possible for applications in conceptual anisotropic optoelectronic and nanomechanical devices. The triclinic symmetry of the crystal lattice caused by the Re4 “diamond-shaped” parallelograms renders it optically bi-axial, giving the rise of an inherent anisotropic in-plane polarisation response. For this reason, ReSe₂ and its doped hybrid materials are promising candidates for optical logic gates and optical computation.

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≥99.999% rhenium diselenide Crystal

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Low Cost Rhenium Diselenide

Powder & Crystal

Different Forms of Rhenium Diselenide

ReSe₂ devices exhibit an outstanding photoresponse to near-infrared light and field-effect transistors (FETs). Employing ReSe₂ shows a p-type conduction characteristic with a current ON/OFF ratio of up to 10⁵ and a hole-carrier mobility of 0.98 cm²V^-1s^-1.

We supply low price rhenium diselenide in several different forms for a range of applications.

Rhenium Diselenide Powder

Can be used for preparation of rhenium diselenide nanoplates and ultrathin films

Sold by weight

≥99.995% purity

From £220

Rhenium Diselenide Crystals by Size

Can be used to produce single or few-layer rhenium diselenide 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 rhenium diselenide crystal is most commonly used as sources from which single or few-layer sheets can be obtained via either mechanical or liquid exfoliation. 

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Rhenium diselenide powder can also be used to prepare ReSe₂ nanosheets and nanoparticles by liquid-exfoliation (normally assisted by sonication), especially when it is the case of foreign elements such as lithium or sodium cations being inserted between layers by the process of intercalation. Liquid exfoliation can provide mass production of such products.

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• High purity, low price rhenium diselenide
• Available as a powder or as individual crystals
• Can be used to produce single or few-layer sheets
• Free worldwide shipping on qualifying orders

Structure of Rhenium Diselenide

Unlike most of the TMDCs such as MoS₂ and WSe₂, (which crystallise in a 2H-hexagonal structure) ReSe₂ shows a distorted CdCl₂-type lattice structure. Each unit cell of ReSe₂ contains four unit layers, which includes two categories of rhenium (Re) atoms together with four categories of selenium (Se) atoms.

The Se atoms on top and at the bottom sandwich the Re atoms in the middle to form a monolayer lattice of ReSe₂. Adjacent Re atoms are bonded in a distorted zigzag four-atom parallelogram form. Calculations identified that such a distorted octahedral (1T') crystal structure with triclinic symmetry has lower energy than its hexagonal counterpart to promote stabilty.

The triclinic symmetry of the crystal lattice caused by the Re4 “diamond-shaped” parallelograms renders it optically bi-axial, giving the rise of an inherent anisotropic in-plane polarisation response.

Properties of 2D Rhenium Diselenide

After exfoliation of crystals or powder, rhenium diselenide typically has the following properties:

• ‎Trinic (1T') structure (space group: P-1)
• Strong in-plane anisotropy and in-plane polarisation anisotropic response
• ReSe₂ shows a p-type conduction characteristic with a current ON/OFF ratio of up to 10⁵ and a hole-carrier mobility of 0.98 cm²V^-1s^-1
• Bandgap is weakly layer-dependent and decreases from 1.31 eV for thin layers to 1.29 eV in thick flakes.

Applications of Rhenium Diselenide

Rhenium diselenide single crystals can be used to prepare monolayer and few-layer ReSe₂ by mechanical or liquid exfoliation. Rhenium diselenide powder is suitable for liquid chemical exfoliation to prepare ReSe₂ nanosheets and nanoparticles down to few-layer films. 

Due to its reduced lattice symmetry, it also has potential applications in electronics, optoelectronics and thermoelectrics such as photodetectors, lasers and transistors.

ReSe₂ has also a wide range of applications including strain sensors, stretchable electrodes, and flexible FETs, solar cells, and other photonic devices.

Rhenium diselenide exhibits a low-symmetry crystal lattice due to its distorted structure caused by the parallel arrangement of Re atoms. This results in anisotropic electrical and optical properties, which is what sparked the rise of ReSe₂ applications in polarisation-sensitive photodetectors and integrated polarisation controllers.

With a direct bandgap of ~ 1.1 eV, rhenium diselenide (ReSe₂) can be used for energy harvesting photovoltaic device and energy storage electrocatalytic devices such as hydrogen evolution reactions (HERs).

Due to its reduced lattice symmetry, it also has potential applications in electronics, optoelectronics and thermoelectrics such as photodetectors, lasers and transistors.

ReSe₂ has also a wide range of applications including strain sensors, stretchable electrodes, and flexible FETs, solar cells, and other photonic devices.

Literature and Reviews

• Temperature dependence of Raman shifts in layered ReSe2 and SnSe2 semiconductor nanosheets, A. Taube, Appl. Phys. Lett. 107, 013105 (2015); doi: 10.1063/1.4926508
• Rhenium diselenide (ReSe2) infrared photodetector enhanced by (3aminopropyl)trimethoxysilane (APTMS) treatment, M. H. Alia et al., Org. Electron.,  53, 14–19 (2018); doi: 10.1016/j.orgel.2017.11.006.
• Interlayer Interactions in Anisotropic Atomically-thin  Rhenium Diselenide, H. Zhao et al.,  Nano Res., 8(11): 3651–3661 (2015); DOI: 10.1007/s12274-015-0865-0.
• Highly Anisotropic in-Plane Excitons in Atomically Thin and Bulklike 1T′‑ReSe2, A. Arora et al., Nano Lett., 17, 3202−3207 (2017); DOI:10.1021/acs.nanolett.7b00765.
• Layer-dependent electrical and optoelectronic responses of ReSe2 nanosheet transistors, S. Yang et al., Nanoscale,6, 7226–7231 (2014); DOI: 10.1039/c4nr01741b.
• Direct identification of monolayer rhenium diselenide by an individual diffraction pattern, Z. Fei et al., Nano Res.,  10(7): 2535–2544 (2017); DOI 10.1007/s12274-017-1639-7.
• Application of chemical vapor-deposited monolayer ReSe2 in the electrocatalytic hydrogen evolution reaction, S. Jian et al., Nano Res., 11(4): 1787–1797 (2018); doi:10.1007/s12274-017-1796-8.
• Broad Detection Range Rhenium Diselenide Photodetector Enhanced by (3-Aminopropyl)Triethoxysilane and Triphenylphosphine Treatment, S-H.Jo et al., Adv. Mater., 28, 6711–6718 (2016); DOI: 10.1002/adma.201601248.
• Rhenium Dichalcogenides: Layered Semiconductors with Two Vertical Orientations, L. Hart et al., Nano Lett., 16, 1381−1386 (2016); DOI: 10.1021/acs.nanolett.5b04838.
• Epitaxial growth of large-area and highly crystalline anisotropic ReSe2 atomic layer, F Cui et al., Nano Res., 10(8): 2732–2742 (2017); DOI 10.1007/s12274-017-1477-7.
• Tunable Ambipolar Polarization-Sensitive Photodetectors Based on High-Anisotropy ReSe2 Nanosheets, E. Zhang et al., ACS Nano, 10, 8067−8077 (2016); DOI: 10.1021/acsnano.6b04165.
• Chemical Vapor Deposition Synthesis of Ultrathin Hexagonal ReSe2 Flakes for Anisotropic Raman Property and Optoelectronic Application, M. Hafeez et al., Adv. Mater., 28, 8296–8301 (2016); DOI: 10.1002/adma.201601977.
• Tuning the Optical, Magnetic, and Electrical Properties of ReSe2 by
  Nanoscale Strain Engineering, S. Yang et al., Nano Lett., 15, 1660−1666 (2015); DOI: 10.1021/nl504276u.
• Raman Spectra of Monolayer, Few-Layer, and Bulk ReSe2: An Anisotropic Layered Semiconductor, D. Wolverson et al., ACS Nano, 8 (11), 11154–11164 (2014); DOI: 10.1021/nn5053926.
• Direct synthesis and in situ characterization of monolayer parallelogrammic rhenium diselenide on gold foil, S. Jiang et al., Commun. Chem., 1, 17 (2018); DOI: 10.1038/s42004-018-0010-6.