TITLE:
Examination of Treatment Methods for a PEDOT:PSS Transparent Conductive Film Produced Using an Inkjet Method
AUTHORS:
Atsushi Nitta, Yuki Imamura, Kazuya Kawahara, Kazuhiro Takeda
KEYWORDS:
PEDOT:PSS, Inkjet Printing, Transparent Conductive Film, Flexible Devices
JOURNAL NAME:
Advances in Materials Physics and Chemistry,
Vol.7 No.8,
July
27,
2017
ABSTRACT: Flexible devices manufactured using printed
electronics have attracted the attention of many researchers. A
high-performance transparent conductive film exhibiting high flexibility and
elasticity is expected to be developed because of its need for the creation of
flexible devices. An indium tin oxide (ITO) thin film, which has generally been
used, has weaknesses such as fragility to bending stress and depletion of the
resource. This study focused on poly (3, 4-ethy-lenedioxythiophene)/poly (styrenesulfonate) (PEDOT:PSS), a conductive polymer
material, and examined improvement in the resistivity and transmittance of the
transparent conductive film produced using an inkjet method. The present study
improved the electrical and optical characteristics of the thin film by
examining the annealing temperature between printing operations and the
application method of a polar solvent. As a result, the resistivity and
transmittance of a PEDOT:PSS thin film were 1.49 × 10-3 Ω·cm and
89.2%, respectively. This film was obtained by annealing at 90°C for 30 min and
applying a polar solvent, using an inkjet printer, between printing operations.
The printing was performed three times.