1 research outputs found
Fast Process To Decorate Silver Nanoparticles on Carbon Nanomaterials for Preparing High-Performance Flexible Transparent Conductive Films
This work demonstrates a fast process
to decorate silver (Ag) nanoparticles
onto the functionalized few-walled carbon nanotubes (f-FWCNTs) and
graphene nanosheets (f-GNs). The Ag-coated carbon nanomaterials were
used as fillers, which mixed with polyÂ(3,4-ethylenedioxythiophene)–polyÂ(4-stryensulfonate)
(PEDOT:PSS) for preparing high optoelectronic performances of flexible
transparent conductive films (TCFs). The Ag nanoparticles with a particle
size of approximate 5 nm were uniformly distributed on the surfaces
of the f-FWCNTs (Ag@f-FWCNTs) and the f-GNs (Ag@f-GNs). The Ag ions
play the role of electron acceptors during the reduction process,
which increases the hole concentrations in PEDOT:PSS, f-FWCNTs, and
f-GNs, therefore enhancing the electrical conductivity of the TCFs.
Additionally, the Schottky barrier was decreased because of the increase
of work functions of the carbon fillers caused by Ag decoration. The
X-ray diffraction spectrum of Ag@f-GNs depicts the formations of the
face-centered cubic Ag nanoparticles, and the peak of the (002) graphene
plane slightly shifted to the lower frequency, indicating that the
f-GN interlayer was intercalated with Ag ions or Ag nanoparticles.
When the mixture of 2.0 wt % Ag@f-FWCNTs and 8.0 wt % Ag@f-GNs containing
PEDOT:PSS dispersant was coated onto a polyÂ(ethylene terephthalate)
(PET) substrate, outstanding optoelectronic properties with a sheet
resistance of 50.3 Ω/sq and a transmittance of 79.73% at a wavelength
of 550 nm were achieved