Polypyrrole active layers of gas sensors prepared by MAPLE technology

Thin layers of polypyrrole (PPY) were deposited by MAPLE (Matrix Assisted Pulse Laser Evaporation) technology. The deposition was carried out by KrF excimer laser from water and dimethylsulfoxide matrixes. Ablation thresholds (Fth) were determined to be Fth ∼ 0.3 J.cm−2for dimethylsulfoxide matrix a...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 76; no. 1; p. 012044
Main Authors Vrnata, M, Kopecký, D, Vyslouzil, F, Ekrt, O, Myslík, V, Fitl, P, Jelínek, M, Kocourek, T
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.07.2007
Subjects
Ablation
Chemical composition
Excimer lasers
Excimers
Gas sensors
Krypton fluoride lasers
Physics
Polypyrroles
Relative humidity
Temperature dependence
Thin films
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Summary:Thin layers of polypyrrole (PPY) were deposited by MAPLE (Matrix Assisted Pulse Laser Evaporation) technology. The deposition was carried out by KrF excimer laser from water and dimethylsulfoxide matrixes. Ablation thresholds (Fth) were determined to be Fth ∼ 0.3 J.cm−2for dimethylsulfoxide matrix and Fth ∼ 0.45 J.cm−2for water matrix. The roughness of deposited layers was measured by AFM and their chemical composition was characterized by FTIR spectroscopy. Finally, resistance of sensors with PPY active layer was measured in dependence on working temperature and relative humidity of surrounding atmosphere.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/76/1/012044