Laser deposition of sulfonated phthalocyanines for gas sensors

0431453 - FZÚ 2015 RIV NL eng J - Journal Article
Fitl, Přemysl - Vrňata, M. - Kopecký, D. - Vlček, J. - Škodová, J. - Bulíř, Jiří - Novotný, Michal - Pokorný, Petr
Laser deposition of sulfonated phthalocyanines for gas sensors.
Applied Surface Science. Roč. 302, MAY (2014), s. 37-41. ISSN 0169-4332. E-ISSN 1873-5584.
[European-Materials-Research-Society Symposium on Laser Material Interactions for Micro- and Nano- Applications /5./. Strasbourg, 27.05.2013-31.05.2013]
R&D Projects: GA ČR(CZ) GAP108/11/1298
Institutional support: RVO:68378271
Keywords : Matrix Assisted Pulsed Laser Evaporation * substituted phthalocyanines * gas sensors * impedance measurements
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.711, year: 2014

Thin layers of nickel and copper tetrasulfonated phthalocyanines (NiPcTS and CuPcTS) were prepared byMatrix Assisted Pulsed Laser Evaporation method. The depositions were carried out with KrF excimer laser(energy density of laser radiation EL= 0.1–0.5 J cm−2) from dimethylsulfoxide matrix. For both materialsthe ablation threshold EL-thwas determined. The following properties of deposited layers were char-acterized: (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 – hydrogenand ozone. The prepared sensors exhibit response to 1000 ppm of hydrogen and 100 ppb of ozone evenat laboratory temperature.
Permanent Link: http://hdl.handle.net/11104/0236035