Enhancement of conductivity on PEDOT / salt hybrid films

Abstract

A new method for increasing conductivity of π-conjugated polymer was demonstrated with a large amount of ionic salts. A it-conjugated polymer, poly (3,4-ethylenedioxythiophene) / poly(styrenesulfonate), as known PEDOT / PSS was mixed with lithium salts, such as EMI-TFSI, LiTFSI, and LiBETI. In particular, the mixture including 50 wt.% LiBETI showed a high conductivity, 75 S / cm. © 2010 The Institute of Electrical Engineers of Japan.