Bi2Te3 (Bismuth Telluride)

Bi2Te3 Bismuth Telluride Bi2Te3 is a topological insulator. 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.

The Bi2Te3 crystals produced at HQ Graphene have a typical lateral size of ~0.6-0.8 cm, rectangular shaped and have a metallic appearance.

Bi2Te3 crystal properties
Crystal size ~10 mm
Electrical properties Topological Insulator
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
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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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XRD of a single crystal Bi2Te3. X-ray diffraction was performed at room temperature using a D8 Venture Bruker.

EDX of a single crystal Bi2Te3.

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Bi2Te3 (Bismuth Telluride)

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