Demonstratortest av gassensor baserad på tryckt organisk elektronik och jonledande papper

Sammanfattning: Researchers at Karlstad University have developed a method for making paper ion conducting. The reasearchers want to test this technique in various applications and produce products that make use of the ion-conducting paper. Hopefully this will drive the development forward and result in new applications for the ion-conducting paper. This study was to test the possibility of manufacturing a gas sensor of conducting paper along with electrodes of conductive polymers printed on the paper. By comparing the paper sensor with an electrochemical cell in which the electrodes of conductive polymer replaces electrodes of metal and ion-conductive paper replaces the liquid electrolyte in the electrochemical cell, it was hoped that it would be possible to measure the oxidation and reduction reactions that a gas could introduce at the electrodes. It was shown that it is possible to measure a potential difference in the range of 0.3 V to 0.5 V between the electrodes when exposing an electrode to 100% oxygen. The reaction that takes place is relatively slow and the reaction rate is partly due to the distance between the electrodes. Since the sensor can measure oxidation and reduction reactions it is possible that, in further development of a sensor, the sensor can be made ​​into a versatile sensor with more applications than gas measurement as there are many more ways to oxidize or reduce the electrodes than by exposure to oxygen. During the study there have been discussions and meetings held with various companies in the sensor industry to be able to specify what the market demands of a sensor made ​​of paper and the requirements that must be placed on the sensor for it to be interesting for the companies.