Spray-coating thin films on three-dimensional surfaces for a semitransparent capacitive-touch device
File(s)acsami.8b02784.pdf (3 MB)
Published version
Author(s)
Carey, T
Jones, C
Le Moal, F
Deganello, D
Torrisi, F
Type
Journal Article
Abstract
Here, we formulate low surface tension (∼30 mN/m) and low boiling point (∼79 °C) inks of graphene, single-wall carbon nanotubes and conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and demonstrate their viability for spray-coating of morphologically uniform ( Sq ≈ 48 ± 3 nm), transparent conducting films (TCFs) at room temperature (∼20 °C), which conform to three dimensional curved surfaces. Large area (∼750 cm2) hybrid PEDOT:PSS/graphene films achieved an optical transmission of 67% in the UV and 64% in the near-infrared wavelengths with a conductivity of ∼104 S/m. Finally, we demonstrate the spray-coating of TCFs as an electrode on the inside of a poly(methyl methacrylate) sphere, enabling a semitransparent (around 360°) and spherical touch sensor for interactive devices.
Date Issued
2018-06-13
Date Acceptance
2018-05-10
Citation
ACS Applied Materials and Interfaces, 2018, 10 (23), pp.19948-19956
ISSN
1944-8244
Publisher
American Chemical Society
Start Page
19948
End Page
19956
Journal / Book Title
ACS Applied Materials and Interfaces
Volume
10
Issue
23
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/29745645
Subjects
3D surfaces
capacitive touch sensor
carbon nanotubes
graphene
liquid phase exfoliation
spray coating
transparent conducting film
Publication Status
Published
Date Publish Online
2018-05-10