As2Te3 (alpha phase Arsenicum Telluride)
As2Te3 (alpha phase) is a semiconductor (~0.2-0.4 eV) and thermoelectric material. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. α-As2Te3 belongs to the group-15 metalloid trichalcogenides.
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The Arsenicum Telluride crystals have a typical lateral size of ~0.6-0.8 cm. The crystals have a metallic appearance.
| Crystal size | ~8 mm |
| Electrical properties | Semiconductor, Thermoelectric material |
| Crystal structure | Monoclinic C |
| Unit cell parameters | a = 1.430 nm, b = 0.403 nm, c = 0.986 nm, α = γ = 90°, β = 95.40° |
| Type | Synthetic |
| Purity | >99.995 % |
| Characterized by | XRD, Raman, EDX |
| More information? | Please contact us by email or phone |
The single crystal As2Te3 is characterized using:
XRD: single crystal and powder X-ray diffraction (D8 Venture Bruker and D8 Advance Bruker)EDX:Energy-dispersive X-ray spectroscopy for stoichiometric analysis
Raman: 785nm Raman system
Raman, XRD and EDX on As2Te3:
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HQ Graphene Wiki on:
As2Te3 (Arsenicum Telluride)
1. Khalil, L. et al. "α−As2Te3 as a platform for the exploration of the electronic band structure of single layer β− tellurene." Physical Review B 106.12 (2022): 125152. 2. Khalil, L. et al. "Electronic band gap of van der Waals α-As2Te3 crystals." Applied Physics Letters 119.4 (2021): 043103.