TITLE:
Characteristics Improvement of PEDOT:PSS Transparent Conductive Film Prepared by Ink-Jet Printing
AUTHORS:
Atsushi Nitta, Kazuya Kawahara, Kohei Miyata
KEYWORDS:
PEDOT:PSS, Ink-Jet Printing, Transparent Conductive Film, Flexible Devices
JOURNAL NAME:
Advances in Materials Physics and Chemistry,
Vol.6 No.8,
August
4,
2016
ABSTRACT: Recently, a
high-performance and low-priced transparent conductive film has been expected
to be developed because flexible devices produced using organic materials have
been actively studied. An indium tin oxide (ITO) thin film, which has been
generally used as a material for a transparent conductive film, has problems,
such as fragility to bending stress and depletion of the resource. The present
study used poly(3, 4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT:PSS),
an organic electroconductive material, and examined the improvement in the
resistance value and visible light transmittance of a transparent conductive
film produced using the ink-jet method. In previous studies, we reported that,
to improve the resistance value and visible light transmittance of a thin film,
it was effective to clean the film substrate with ultraviolet/ozone (UV/O3)
treatment, anneal the film after it was deposited on the substance, and dip the
annealed film into a polar solvent. Focusing
on the thin film processing between printing operations, the present study
improved resistance value and visible light transmittance by examining both the
application methods of a polar solvent and the annealing time between printing
operations. As a result, the resistance value and visible light transmittance
of a PEDOT:PSS thin film were 390.4 Ω and 86.6%, respectively. This film was
obtained by applying a polar solvent and performing annealing for 30 min
between printing operations. The printing was performed three times.