High electrical conductivity and carrier mobility in oCVD PEDOT thin films by engineered crystallization and acid treatment.

ABSTRACT: Air-stable, lightweight, and electrically conductive polymers are highly desired as the electrodes for next-generation electronic devices. However, the low electrical conductivity and low carrier mobility of polymers are the key bottlenecks that limit their adoption. We demonstrate that the key to addressing these limitations is to molecularly engineer the crystallization and morphology of polymers. We use oxidative chemical vapor deposition (oCVD) and hydrobromic acid treatment as an effective tool to achieve such engineering for conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT). We demonstrate PEDOT thin films with a record-high electrical conductivity of 6259 S/cm and a remarkably high carrier mobility of 18.45 cm² V^-1 s^-1 by inducing a crystal

SUBMITTER: Wang X 

PROVIDER: S-EPMC6140612 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature