Iron Phosphorus Triselenide (FePSe3) Powder and Crystal

Iron phosphorus triselenide (FePSe₃) belongs to a layered MPX₃ (M = Mn, Fe, Ni, Zn and X = S, Se) family. FePSe₃, with a layered structure like graphite, is a low bandgap ternary magnetic semiconductor with p-type characteristics as grown single crystals. Like FePS₃, FePSe₃ has also been predicted to have Ising-type antiferromagnetic ordering from its bulk form to the ultrathin nanosheets.

Antiferromagnetic semiconductor FePSe₃ shows superconductivity along with the structural transition and vanishing of magnetic moment with a starting Tc ~2.5 K at 9.0 GPa and the maximum Tc ~5.5 K around 30 GPa. 

Having a rhombohedral crystal system with space group R3̅ , FePSe₃ undergoes isostructural or quasi-isostructural phase transitions under applied pressure at ~8 GPa 

We supply low price iron phosphorus triselenide in several different forms for a range of applications.

Iron Phosphorus Triselenide Powder

Can be used for preparation of iron phosphorus triselenide nanoplates and ultrathin films

Available in quantities of 1 g

≥99.995% purity

From £320

Iron Phosphorus Triselenide Crystals by Size

Can be used to produce single or few-layer iron phosphorus triselenide sheets via mechanical or liquid exfoliation

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

≥99.999% purity

From £480

*Typical representative size, areas/dimensions may vary

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

Platinum FET Test Chips for 2D Materials

• Affordable
• World-Wide Shipping
• Dual Channel Electrodes

Buy Online £180

Order Now

Few-layer FePSe₃ nanosheets and nanoparticles can also obtained from iron phosphorus triselenide powder by liquid-exfoliation.

Key Product Data

• High purity iron phosphorus triselenide suitable for a range of applications
• Available in powdered form or in crystal form by weight or size
• Low price with free worldwide shipping on qualifying orders

Structure of Iron Phosphorus Triselenide

Iron phosphorus triselenide (FePSe₃) belongs to a layered MPX₃ (M = Mn, Fe, Ni, Zn and X = S, Se) family, having a rhombohedral crystal iron phosphorus triselenide system and contains three layers of FePSe₃ per unit cell. 

In the FePSe₃ crystal, the P atom is coordinated to three S atoms and one P atom to form a [P₂Se₆]^4- unit. The [P₂Se₆]^4- unit is connected with six Fe atoms, which are arranged in a honeycomb plane structure. However, unlike FePS₃ where the atomic layers of the sulfides stack in the C2/m space group, selenides stack in R3̅. 

Raman spectrum of bulk FePSe₃ shows intense peaks at 215 and 168 cm^-1 that are assigned to the stretching vibration of P−Se bond in a [P₂Se₆]^4- cluster.

Properties of Iron Phosphorus Triselenide

After exfoliation of iron phosphorus triselenide crystal or powder, FePSe₃ typically has the following properties:

• ‎Rhombohedral (space group: R3̅ )
• Transition metal phosphorus trichalcogenides (MPX₃)
• FePSe₃ is predicted to have Ising-type antiferromagnetic ordering
• Antiferromagnetic semiconductor FePSe₃ shows superconductivity along with the structural transition and vanishing of magnetic moment

Applications of Iron Phosphorus Triselenide

Iron phosphorus triselenide (FePSe₃) single crystals can be used to prepare monolayer and few-layer FePSe₃ by mechanical or liquid exfoliation. 

Iron phosphorus triselenide is suitable for liquid chemical exfoliation to prepare FePSe₃ nanosheets and nanoparticles down to few-layer films.

Iron phosphorus triselenide (FePSe₃) quantum sheets are excellent and highly stable trifunctional electrocatalyst for hydrogen evolution, oxygen evolution, and oxygen reduction reactions. Apart from being one of the most effective electrocatalysts for hydrogen evolution reactions (HER), FePSe₃ can also be intercalated with llthium or sodium ions for batteries, transistors and other energy storage devices.

Iron phosphorus triselenide (FePSe₃) single crystals can be used to prepare monolayer and few-layer FePSe₃ by mechanical or liquid exfoliation. 

Iron phosphorus triselenide is suitable for liquid chemical exfoliation to prepare FePSe₃ nanosheets and nanoparticles down to few-layer films.

Iron phosphorus triselenide (FePSe₃) quantum sheets are excellent and highly stable trifunctional electrocatalyst for hydrogen evolution, oxygen evolution, and oxygen reduction reactions. Apart from being one of the most effective electrocatalysts for hydrogen evolution reactions (HER), FePSe₃ can also be intercalated with llthium or sodium ions for batteries, transistors and other energy storage devices.

Literature and Reviews

1. Electronic and magnetic properties of single-layer MPX3 metal phosphorous trichalcogenides, B. Chittari et al., Phys. Rev. B, 94, 184428 (2016); doi: 10.1103/PhysRevB.94.184428.
2. Metallic FePSe3 nanoparticles anchored on N-doped carbon framework for All-pH hydrogen evolution reaction, J. Yu et al., Nano Energy, 57, 222-229 (2019); doi: 10.1016/j.nanoen.2018.12.055.
3. The Role of the Metal Element in Layered Metal Phosphorus Triselenides upon Their Electrochemical Sensing and Energy Applications, R. Gusmão et al., ACS Catal., 7 (12), 8159-8170 (2017); doi: 10.1021/acscatal.7b02134.
4. Intrinsic Van Der Waals Magnetic Materials from Bulk to the 2D Limit: New Frontiers of Spintronics, H. Li et al., Adv. Mater., 31 (27), 1900065 (2019); doi: 10.1002/adma.201900065.
5. Few-Layer Iron Selenophosphate, FePSe3: Efficient Electrocatalyst Towards Water Splitting and Oxygen Reduction Reactions, D. Mukherjee et al., ACS Appl. Energy Mater., 1 (1), 220-231 (2018); doi: 10.1021/acsaem.7b00101.
6. Ion Gated Synaptic Transistors Based on 2D van der Waals Crystals with Tunable Diffusive Dynamics, J. Zhu et al., Adv. Mater., 1800195 (2018); DOI: 10.1002/adma.201800195.
7. Emergent superconductivity in an iron-based honeycomb lattice initiated by pressure-driven spin-crossover, Y. Wang et al., Nat. Commun., 9, 1914 (2018); DOI: 10.1038/s41467-018-04326-1.
8. Weak Van der Waal Stacking, Wide-Range Band Gap and Raman Study on Ultrathin Layers of Metal Phosphorus Trichalcogenides, K. Du et al., ACS Nano.,10(2):1738-43 2016); doi: 10.1021/acsnano.5b05927