With the growth of global energy demand and the increasingly severe environmental problems, thermoelectric materials, as a kind of functional materials that can realize the direct conversion of thermal energy and electric energy, have been widely concerned. The accurate measurement of thermoelectric properties of materials is the basis for further study of thermoelectric materials and development of high-efficiency thermoelectric conversion devices. The thermoelectric properties are mainly determined by three key parameters: Seebeck coefficient (S), electrical conductivity (σ) and thermal conductivity (κ). The thermoelectric value (ZT = S²σκT) comprehensively reflects the thermoelectric conversion efficiency of the material. Therefore, accurate determination of these parameters is essential to evaluate the thermoelectric properties of materials.
Thermoelectric performance tester enables the evaluation of the thermoelectric performance of metal or semiconductor materials.
Product Parameters
Main technical parameters: 1. Temperature range: RT up to 600ºC; 2. Temperature resolution: 0.001ºC; 3. Temperature control accuracy: +/-0.25K; 4. Constant current source: 0.000-220mA; Resolution: 100nA; Stability: 0.008+20nA/ day, standard configuration imported advanced commercial Keithley data acquisition instrument. Keithley technology: 100nV rms noise background, DC voltage sensitivity as low as 10nV, base accuracy 0.002% (90 days) 7ppm DCV repeatability, base 1-year DCV accuracy: 0.0028% maximum reading speed range 2k readings/SEC; 5. Measuring range: Seebeck coefficient: 0.5μV/K-25V/K; Resistivity: 0.2μΩmm~2.5KΩmm; 6. Temperature resolution: 0.001ºC; 7. Ac voltage resolution: 0.1μV resistance resolution: 1μΩ current resolution: 1nA 5: U-I curve automatic scanning, calculate the appropriate current value, can accurately measure the conductivity 8. Accuracy: Seebeck coefficient: ± 7%; Electrcial Conductivity: ± 10% ; Repeatability: 3% 9. Sample reference size: 4*4*20-----8*8*30mm
Instrument configuration: 1. Test host (horizontal structure) 2. Environmental heating furnace (2KW, /600 ºC) 3. Measuring bracket (including 4 electrodes, two temperature difference probes, adjustable electrodes, auxiliary heating) 4. Vacuum cover, shielding cover 5. Testing software 6. User manual
Audited Supplier 
){kind=link}