Measurement system to determine the seebeck coefficient and electrical conductivity of thin films.
PEREIRA, Gustavo Gonçalves Dalkiranis; BOCCHI, João Henrique Cirilo; TORRES, Bruno Bassi Millan; LOPEANDIA-FERNÁNDEZ, Aitor; OLIVEIRA JUNIOR, Osvaldo Novais de; FARIA, Gregório Couto.
PEREIRA, Gustavo Gonçalves Dalkiranis; BOCCHI, João Henrique Cirilo; TORRES, Bruno Bassi Millan; LOPEANDIA-FERNÁNDEZ, Aitor; OLIVEIRA JUNIOR, Osvaldo Novais de; FARIA, Gregório Couto.
Abstract: Thermoelectric (TE) materials are promising for energy-generating devices, and their design depends on a fast, precise determination of their Seebeck coefficient and electrical conductivity. Herein, a low-cost setup was developed to determine the Seebeck coefficient and electrical conductivity of thin films, allowing the calculation of the power factor (PF) (PF=S2s) . The system was validated by measuring the Seebeck coefficient and electrical conductivity of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), a widely used material in organic electronics and TE generators. The results demonstrate the high resolution of our system, with obtained values of 0.1 µV/K for Seebeck coefficient, 0.1 S/cm for electrical conductivity, and 0.1 µW/K2 for PF. A detailed description of the fabrication of the measurement setup is provided, with the aim of making thermoelectricity accessible to any research laboratory, even in places with limited budgets.
@article={003243592,author = {PEREIRA, Gustavo Gonçalves Dalkiranis; BOCCHI, João Henrique Cirilo; TORRES, Bruno Bassi Millan; LOPEANDIA-FERNÁNDEZ, Aitor; OLIVEIRA JUNIOR, Osvaldo Novais de; FARIA, Gregório Couto.},title={Measurement system to determine the seebeck coefficient and electrical conductivity of thin films},journal={IEEE Transactions on Instrumentation and Measurement},note={v. 74, p. 1503706-1-1503706-6},year={2025}}