Abstract
Abstract An electrochemical amperometric nitrogen dioxide sensor with solid polymer electrolyte has been fabricated on flexible substrate by screen printing technology. The sensor concept is based on semi-planar, three electrode topology that enables to produce low power, high performance, thin and selective device that can be implemented on PET and/or Kapton foil. In addition, it has been demonstrated that the new platform of the electrochemical NO2 sensor can be manufactured without metallic electrodes which is very important from the point of view of environments. The sensor shows linear response in the range of 0-10 ppm, fast response/recovery times (70/60 s, respectively) and sensitivity 590 nA/ppm. All sensor layers have been prepared by low cost mass production technology presented by screen printing technique. This approach has allowed to fabricate flexible, extremely low cost electrochemical NO2 sensors for environmental monitoring.
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