Thermoelectrical material produced by extrusion possesses particularly high mechanical properties which help produce modules with dices even 0.2 mm high. In addition the plastic strain in high pressure conditions ensures a higher degree of texture and homogeneity. Thus, thermoelectrical performance of extruded ingots is not only comparable to that of zone-melted materials or materials obtained through Bridgman technique but even surpasses them. This allows to produce modules with thermoelectric figure-of-merit, Z, equal to 2.9x10-3 C at 25 °С (in vacuum).
RusTec manufactures P- and N-type semiconductors on the basis of bismuth telluride of 20-30 mm in diameter, depending on customer’s request.
Standard specification of the material is as follows:
- Length: 120 mm, 240 mm
- Electric conductivity: 850-1150 Ohm-1 cm-1 (other conductivity range is available on request)
- RoHS compliant