%0 Journal Article
%A Li, X
%A Liu, Z
%A Zhou, Z
%A Gao, H
%A Liang, G
%A Rauber, D
%A Kay, CWM
%A Zhang, P
%D 2021
%F discovery:10119138
%J ACS Applied Polymer Materials
%K Salts, Plastics, Electrical conductivity, Conjugated polymers, Polymers
%N 1
%P 98-103
%T Effects of Cationic Species in Salts on the Electrical Conductivity of Doped PEDOT:PSS Films
%U https://discovery.ucl.ac.uk/id/eprint/10119138/
%V 3
%X The electrical conductivity of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films with four salts that have various cations but the same bis(trifluoromethanesulfonyl)amide (TFSI) anion was studied. We found that doping salts of small-sized cations led to better conductivity because of the improved crystalline order and p-doped level of PEDOT, as revealed by the grazing-incidence wide-angle X-ray scattering (GIWAXS) and UV-vis spectrum. This phenomenon can be rationalized with the fact that small-sized cations with stronger Coulombic interactions can lead to high doping and rearrangement of PEDOT:PSS. These findings will help to develop recipes based on the PEDOT:PSS/salt composite toward the applications for printed flexible electronics.
%Z This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.