Title :
Fabrication of Polyaniline-Based Gas Sensors Using Piezoelectric Inkjet and Screen Printing for the Detection of Hydrogen Sulfide
Author :
Crowley, Karl ; Morrin, Aoife ; Shepherd, Roderick L. ; Panhuis, Marc In het ; Wallace, Gordon G. ; Smyth, Malcolm R. ; Killard, Anthony J.
Author_Institution :
Sensors & Separations Group, Dublin City Univ., Dublin, Ireland
Abstract :
This work describes a fully printable polyaniline-copper (II) chloride sensor for the detection of hydrogen sulfide gas. The sensing device is composed of screen printed silver interdigitated electrode (IDE) on a flexible PET substrate with inkjet printed layers of polyaniline and copper (II) chloride. The sensor is employed as a chemiresistor with changes in measured current being correlated with concentration. On exposure to hydrogen sulfide, 2.5 ppmv (parts per million by volume) is clearly detectable with a linear relationship between measured current and concentration over the 10-100 ppmv region. The detection mechanism is discussed with respect to the hydrogen sulfide response, the choice of electrode materials in addition to UV-vis and surface enhanced Raman spectroscopy (SERS) characterization.
Keywords :
conducting polymers; gas sensors; hydrogen compounds; ink jet printing; organic semiconductors; surface enhanced Raman scattering; ultraviolet spectra; visible spectra; UV-vis spectroscopy; chemiresistor; electrode materials; hydrogen sulfide response; piezoelectric inkjet; polyaniline-based gas sensors; polyaniline-copper chloride sensor; screen printed silver interdigitated electrode; screen printing; surface enhanced Raman spectroscopy; Gas sensor; hydrogen sulfide; inkjet printing; polyaniline;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2010.2044996
