Thin Solid Films, Vol.519, No.19, 6610-6612, 2011
Drift in the resistance of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) printed films during thermal cycling
We report on the investigation of the suitability of printed poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films for temperature sensing devices. Gravure printing with the advantage of low cost production was used to prepare thin films of PEDOT:PSS on a flexible foil substrate. The electrical resistance was studied during thermal cycling and exposure to elevated constant temperatures. A drift of the resistance which depends on time, temperature and sample makes the usage as simple temperature sensors not possible. However, a closer look on the drift of relative resistances reveals that integrated temperaturetime-profiles can be measured, which might be interesting in connection with monitoring of conditions of storing and transport of sensitive goods. (C) 2011 Elsevier B.V. All rights reserved.
Keywords:poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate);Printed electronics;Conducting polymers;Temperature sensors