Bismuth telluride crystal substrate is highly oriented crystal ( not single crystal ), which is a narrow gap layered semiconductor with a hexagonal structure. The valence and conduction band structure can be described as a many-ellipsoidal model with 6 constant-energy ellipsoids that are centered on the reflection planes. General thermoelectric materials, thermoelectric factor is currently the largest pure-phase block; mechanical dissociation can get high-quality topological insulator material.
Specifications:
- • Structure: Hexagonal, group 166,R-3M
- • Grown method: High-pressure vertical Bridgman
- • Lattice constant: a=4.38A c=30.5A
- • Substrate orientation: highly oriented layer structure along <0001>
- • Surface: as Cleaved
- • Purity: 99.999%, atomic ratio,
- • MeltingPoint: 585 oC
- • Resistivity : 0.1-5 mohm. cm
- • Mobility : 3000 cm2 / V.s
- • General Size: irregular shape,about 5 mm x 5 mm x 0.1mm,
- • Packing: packed in plastic bag with vacuum