Resistance characteristics of conducting polymer films used in gas sensors

Thermoelectric power and conductivity of different types of polypyrrole

“…7,8 The electrodes were separated by a 5-m gap, and the films were approximately 50 nm thick. The dopants used were p-toluenesulfonic acid (sample S-pTS in Table I), octanesulfonic acid (S-OS), and Tiron (4,5-dihydroxy-1,3-benzenedisulfonic acid, disodium salt monohydrate, sample S-DHBS).…”

“…5,6 It is of interest to determine what other differences exist in the properties of this new type of polypyrrole compared to comparable electrochemically prepared samples. The recent development of polypyrrole for use in gas sensors 7,8 also gives added impetus to the quest to understand more fully the variations in the behavior of its electronic transport properties and to compare this behavior with that seen in our earlier studies of polyaniline 9 and polyacetylene. 10 In this article, we report and compare measurements of thermoelectric power and conductivity down to low temperatures for a wide variety of different samples of polypyrrole.…”

Eine neue Methode zur Quellenlokalisierung auf der Basis räumlich verteilter, punktweiser Konzentrationsmessungen

“…• Ein Leitendes-Polymer-Sensor [8,43,46] • Ein Schwingquarz-Sensor [7,38,44] • der Luftüberwachung in Raumstationen [114].…”

Organic conductor: Influence of preparation temperature

“…These polymeric materials can be obtained in various forms like powders and thin films (Bhattacharya and De, 1996). In recent years, conducting polymer have been studied extensively because of their potential application in light emitting diodes (Friend et al, 1999), energy storage (Novak et al, 1997;Mermilliod and Tanguy, 1986;Osaka et al, 1987), energy conversion (Skotheim et al, 1982), electrochemical capacitors (Belanger et al, 2000), electrochromic devices (Gazotti et al, 1999), gas sensor (Talaie et al, 2000;Harris et al, 1997), electromagnetic interference shielding * Corresponding author. Tel.…”