Freestanding flexible thermoelectric micrometer-thick films with 204 μW m–1 K–2 power factor, a 4 orders magnitude improvement

https://pubs.acs.org/doi/10.1021/acsaem.4c02568

"4 orders of magnitude higher than pristine films... polymer chain realignment/ enhanced charge transport via solvent doping, coupled with PSS reduction during post-treatment, strengthens film mechanics... freestanding nature ensures transferability, versatility... besides thermoelectrics, these highly conductive, robust, and flexible PEDOT:PSS films provide attractive solutions for organic solar cells, battery electrodes, and flexible electronics... made of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)"

Related: Metal/ PEDOT:PSS organic polymer up to 100X improved thermoelectrics compared to metal alone; metal choice controls whether the material behaves as a p-type or n-type semiconductor
https://www.surrey.ac.uk/news/sustainable-breakthrough-low-cost-materials-next-generation-energy-harvesting