|Title||Electrochemical Effects in Thermoelectric Polymers|
|Publication Type||Journal Article|
|Year of Publication||2016|
|Authors||W.B. Chang, H. Fang, J. Liu, C.M. Evans, B. Russ, B.C. Popere, S.N. Patel, M.L. Chabinyc, and R.A. Segalman|
|Journal||ACS MACRO LETTERS|
Conductive polymers such as PEDOT:PSS hold great promise as flexible thermoelectric devices. The thermoelectric power factor of PEDOT:PSS is small relative to inorganic materials because the Seebeck coefficient is small. Ion conducting materials have previously been demonstrated to have very large Seebeck coefficients, and a major advantage of polymers over inorganics is the high room temperature ionic conductivity. Notably, PEDOT:PSS demonstrates a significant but short-term increase in Seebeck coefficient which is attributed to a large ionic Seebeck contribution. By controlling whether electrochemistry occurs at the PEDOT:PSS/electrode interface, the duration of the ionic Seebeck enhancement can be controlled, and a material can be designed with long-lived ionic Seebeck enhancements.