Hyejeong Lee, Gwangju Institute of Science and Technology
Enhanced Thermoelectric Performance of PEDOT:PSS Nanotubes via AAO Template-Assisted Growth
Written by Bharati Neelamraju
Hyejeong Lee works with Ji Young Jo on using variations of PEDOT:PSS for thermoelectric applications. Lee addressed how conducting polymers are a good choice for wearable thermoelectric devices like thermoelectric generators (TEG). She said PEDOT:PSS is one of the highest conductivity polymers but that it still suffers from low thermoelectric efficiencies compared to their inorganic counterparts. The researchers fabricated PEDOT:PSS nanotubes in a template for enhanced thermoelectric efficiencies. They saw an increase in electrical conductivity due to the stretching of PEDOT chains as well as the decrease in thermal conductivity through phonon scattering in these nanotubes made in their laboratory. They achieved better efficiencies by adding post processing treatments and adding a solvent to these thin films. Lee concluded her talk by explaining to the audience why heading toward low-dimensional nanotubes is an interesting path forward for these materials.