Bi2Te3 (Bismuth Telluride)
Bi2Te3 is a topological insulator and has thermoelectric properties at RT. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. Bi2Te3 belongs to the group-15 post-transition metal trichalcogenides.
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The Bi2Te3 crystals produced at HQ Graphene have a typical lateral size of ~0.6-0.8 cm and have a metallic appearance.
| Crystal size | ~10 mm |
| Electrical properties | Topological Insulator, Thermoelectric material |
| Crystal structure | Hexagonal |
| Unit cell parameters | a = b = 0.438 nm, c = 3.050 nm, α = β = 90°, γ = 120° |
| Monolayer properties |  Link to C2DB containing calculated properties |
| Type | Synthetic |
| Purity | >99.995% |
| Characterized by | XRD, Raman, EDX, Hall measurement |
| More information? | Please contact us by email or phone |
The single crystal Bi2Te3 is characterized using:
XRD: single crystal and powder X-ray diffraction (D8 Venture Bruker and D8 Advance Bruker)EDX: Stoichiometric analysis
Raman: 785nm Raman system
Hall measurement: Extraction of charge carrier density and doping in the Van der Pauw geometry.
Raman, XRD and EDX on Bi2Te3:
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HQ Graphene Wiki on:
Bi2Te3 (Bismuth Telluride)
1. Wang, P., et al. "Interlaminar Fracture Toughness Measurement of Multilayered 2D Thermoelectric Materials Bi2Te3 by a Tapered Cantilever Bending Experiment." Experimental Mechanics (2021): 1-16.
2. Shetty, P.P., et al. "In situ dynamics during heating of copper-intercalated bismuth telluride." Matter 3.4 (2020): 1246-1262.