Modulation of the doping level of PEDOT:PSS film by treatment with hydrazine to improve the Seebeck coefficient.

ABSTRACT: As the most popular conducting polymer, poly(3,4 ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is widely used for a variety of applications, including thermoelectrics. This paper reports the modulation of the doping level by treatment with hydrazine to improve the Seebeck coefficient of PEDOT:PSS films. PEDOT:PSS films were first treated with formic acid followed by hydrazine, leading to a significant increase in the Seebeck coefficient from 17.5 to 42.7 μV K^-1, about 2.5 times higher than that of the pristine film partially at the expense of electrical conductivity. An optimum power factor of 93.5 μW K^-2 m^-1, being 2.4 times that of the one treated with only formic acid, was achieved. The substantial improvement in the Seebeck coefficient and

SUBMITTER: Yemata TA 

PROVIDER: S-EPMC9047250 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature