| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5351593 | Applied Surface Science | 2014 | 5 Pages |
Abstract
Thin layers of nickel and copper tetrasulfonated phthalocyanines (NiPcTS and CuPcTS) were prepared by Matrix Assisted Pulsed Laser Evaporation method. The depositions were carried out with KrF excimer laser (energy density of laser radiation ELÂ =Â 0.1-0.5Â JÂ cmâ2) from dimethylsulfoxide matrix. For both materials the ablation threshold EL-th was determined. The following properties of deposited layers were characterized: (a) chemical composition (FTIR spectra); (b) morphology (SEM and AFM portraits); and (c) impedance of gas sensors based on NiPcTS and CuPcTS layers in the presence of two analytes - hydrogen and ozone. The prepared sensors exhibit response to 1000Â ppm of hydrogen and 100Â ppb of ozone even at laboratory temperature.
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Authors
Premysl Fitl, Martin Vrnata, Dusan Kopecky, Jan Vlcek, Jitka Skodova, Jiri Bulir, Michal Novotny, Petr Pokorny,