Characterisation of PEEK, PET and PI implanted with 80 keV Fe+ ions to high fluencies

0433162 - ÚJF 2015 RIV NL eng J - Journal Article
Macková, Anna - Malinský, Petr - Mikšová, Romana - Hnatowicz, Vladimír - Khaibullin, R. I. - Slepička, P. - Švorčík, V.
Characterisation of PEEK, PET and PI implanted with 80 keV Fe+ ions to high fluencies.
Nuclear Instruments & Methods in Physics Research Section B. Roč. 331, JUL (2014), s. 176-181. ISSN 0168-583X. E-ISSN 1872-9584
R&D Projects: GA ČR GA106/09/0125; GA MŠMT(XE) LM2011019
Institutional support: RVO:61389005
Keywords : Fe ion implantation * polymers * depth profiles * RBS * TEM * UV Vis
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 1.124, year: 2014

olyimide (PI), polyetheretherketone (PEEK) and polyethylene terephthalate (PET) foils were implanted with 80 keV Fe+ ions at room temperature at fluencies of 0.2 x 10(16) cm(-2)- 5.0 x 10(16) cm(-2). The implanted polymers were subsequently annealed at 200 degrees C for 20 min. The depth profiles of implanted Fe atoms and compositional changes of the implanted polymers were characterised by RBS and ERDA methods. A significant shift of the Fe concentration maximum to the sample surface with increasing ion fluence was observed and annealing does not influence the Fe profiles. The implanted Fe profiles cannot be reproduced by SRIM and TRIDYN simulations. Hydrogen desorption from the surface layer of all polymers is observed, the effect being the most pronounced on PET. Desorption of oxygen from the samples implanted to lower fluences is observed too. On the samples implanted to the highest fluence of 5.0 x 10(16) cm(-2), however, oxygen concentration increases to the value close to that of pristine polymer, this phenomenon is strongly pronounced after the annealing, which is provided in the ambient atmosphere. The electrical, optical and structural properties of the implanted polymers were investigated by sheet resistance measurement and UV-Vis spectroscopy. With increasing ion fluence, the sheet resistance decreases, but a saturation effect is achieved at a fluence of 5.0 x 10(16) cm(-2). UV-Vis absorbance increases simultaneously with the decline of the optical band gap E-g. After annealing, no significant changes in UV-Vis spectra or in electrical properties were observed.
Permanent Link: http://hdl.handle.net/11104/0237442