This note describes the construction and engineering of a high precision Harman set-up for metrology of the thermoelectric figure of merit (ZT) of modules and materials based on steady state AC and DC measurements. The Harman technique presented in this article has a resolution of milli-ZT and it does not employ lock-in amplifiers or AC bridges; rather, the technique is developed to avoid typical complications experienced in AC Harman systems. By one-time reference measurements the best operation point for the system is chosen, minimizing the effects of capacitive loads due to AC signals. © 2013 AIP Publishing LLC.
CITATION STYLE
Chavez, R., Becker, A., Bartel, M., Kessler, V., Schierning, G., & Schmechel, R. (2013). Note: High resolution alternating current/direct current Harman technique. Review of Scientific Instruments, 84(10). https://doi.org/10.1063/1.4825118
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