Printable organic temperature logger based on overoxidation front propagation in PEDOT:PSS
(English)Manuscript (Other academic)
An electrochemical temperature logger has been realized by using the propagation of overoxidation fronts in stripes of poly(3,4-ethylenedioxythiopehene) blended with poly(styrenesulfonate) (PEDOT:PSS). The over-oxidation front propagation has been characterized and related to the ionic conductivity of polyethylene glycol (PEG) electrolytes. The electrolytes were chosen to have a phase transition in the temperature interval to be monitored, resulting in large conductivity variations and thereby an easily interpreted output. A logger demonstrator has been fabricated and shown to detect a temperature increase and a following temperature decrease. This very simple device is cheap to produce and could be used to monitor the temperature of packages.
IdentifiersURN: urn:nbn:se:liu:diva-15129OAI: oai:DiVA.org:liu-15129DiVA: diva2:54531