The performance of inkjet-printed copper acetate based hydrogen
sulfide gas sensor on a flexible plastic substrate - varying ink
composition and print density

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Jawad Sarfraz, Anna Fogde, Petri Ihalainen, Jouko Peltonen
Publisher: Elsevier
Publication year: 2018
Journal: Applied Surface Science
Journal acronym: Appl. Surf. Sci.
Volume number: 445
Start page: 89
End page: 96
eISSN: 1873-5584


Abstract

Low-cost and robust hydrogen sulfide (H2S) gas sensors can be utilized in different industrial applications.
Earlier we have demonstrated an inexpensive wirelessly readable copper acetate based H2S gas
sensor which was successfully employed for monitoring the quality of raw poultry. In this study we have
thoroughly investigated and optimized the performance of inkjet-printed copper acetate based H2S gas
sensor on flexible plastic substrate at room temperature. The effect of ink composition, print density,
number of print nozzles and temperature of the substrate on sensor performance was tested. The long
term stability of these sensors after exposure to H2S was studied extensively and was optimized as a
function of the print density of copper acetate. The conversion of copper acetate to copper sulfide upon
reaction with H2S was established by X-ray photoelectron spectroscopy. We believe that the optimized
sensor developed in this study with respect to stability, repeatability and material consumption will pave
the way for the commercial use of these sensors e.g. in food quality monitoring and environmental
applications.


Keywords

Functional ink, Gas sensor, Hydrogen sulfide, Inkjet printing, Materials science, Physical chemistry

Last updated on 2019-22-08 at 05:34