In:
ChemPhysChem, Wiley, Vol. 20, No. 3 ( 2019-02-04), p. 374-382
Abstract:
Post‐treatment was performed for poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films screen‐printed on fluorine‐doped tin oxide (FTO) substrates, to improve their charge transfer efficiency. Different H 2 SO 4 solutions, including concentrated H 2 SO 4 and H 2 SO 4 diluted with H 2 O or dimethyl sulfoxide (DMSO), were adopted during the post‐treatment. The adhesion of the as‐treated films was evaluated by adhesive tape peeling tests, the surface morphology and vertical charge transfer from the films to the substrates were investigated by current‐sensing atomic force microscopy, and the catalytic activities toward I 3 − reduction of PEDOT:PSS films were characterized by electrochemical measurements. It is discovered that selecting proper H 2 SO 4 solutions is crucial to improve the charge transfer efficiency and catalytic performance while maintaining reliable adhesion of the film on the substrates, with H 2 SO 4 /DMSO performing best as the solution for post‐treatment. A mechanistic explanationis proposed based on different interactions among solution, PEDOT:PSS, and the substrate for various post‐treatment solutions.
Type of Medium:
Online Resource
ISSN:
1439-4235
,
1439-7641
DOI:
10.1002/cphc.201801133
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2025223-7
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