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Featured researches published by M. Gritsch.


Synthetic Metals | 1999

Charge distribution in light emitting electrochemical cells

L. Holzer; F. P. Wenzl; R. Sotgiu; M. Gritsch; Stefan Tasch; Herbert Hutter; M. Sampietro; G. Leising

The performance of light-emitting electrochemical cells (LEC) is strongly influenced by the inhomogeneous distribution of the three main components (light emitting polymer, ion conductive polymer and ionic molecules) in the device. We report on the local ion distribution of lithium and triflate ions in a blend of the ionic conducting polymer poly (ethylene oxide) (PEO) and the conjugated polymer m-LPPP (methyl substituted poly (para phenylene)) by secondary ion mass spectroscopy(SIMS). In the system ITO/active layer/Al the ions are found to be located close to their counter electrodes. The behavior of these devices is investigated by impedance spectroscopy.


Materials and Corrosion-werkstoffe Und Korrosion | 2001

SIMS analysis of the oxidation behaviour of SiFeCr coated technical refractory metal alloys

M. Gritsch; K. Piplits; H. Hutter; R. Barbist; Peter Wilhartitz

Refractory metal alloys play an important role as highly thermostable materials in the air- and spacecraft industry. Due to their lack of oxidation stability at elevated temperatures it is necessary to protect them with coatings. The thermal-cycle-stability of Si20Cr20Fe-coatings on Nb10W2.5Zr and Ta10W was investigated by means of imaging Secondary Ion Mass Spectrometry; this showed the inward-diffusion of oxygen and other contaminants along cracks formed in the coating during thermal cycling and subsequent precipitation of oxides at the grain boundaries, leading to brittle fracture behaviour of the oxygen-affected surface zone. EDX measurements have been taken to determine the composition of the phases established in this complex system. SIMS Analyse des Oxidationsverhaltens von technischen Refraktarmetalllegierungen mit SiFeCr-Beschichtungen Refraktarmetall-Legierungen spielen eine wichtige Rolle als hoch temperaturfeste Werkstoffe in der Luft- und Raumfahrtindustrie. Wegen ihrer mangelnden Oxidationsbestandigkeit bei erhohten Temperaturen ist es erforderlich, sie durch Beschichtungen zu schutzen. Die Temperaturwechselbestandigkeit von Si20Cr20Fe-Beschichtungen auf Nb10W2.5Zr und Ta10W Legierungen wurde mittels Sekundarionen Massenspektroskopie untersucht. Dabei wurde gezeigt, das Sauerstoff und Verunreinigungen entlang von thermischen Rissen in das Material diffundieren und sich in Folge in einem oberflachennahen Bereich Oxide an den Korngrenzen bilden, die zu sprodem Bruchverhalten des betroffenen Bereichs fuhren. EDX Messungen wurden durchgefuhrt, um die quantitative Zusammensetzung der in diesem komplexen System gebildeten Phasen zu charakterisieren.


Fresenius Journal of Analytical Chemistry | 1998

Investigation of non-metallic impurities in high speed steel using SIMS imaging and scanning techniques

C. Brunner; Herbert Hutter; K. Piplits; M. Gritsch; G. Pöckl; M. Grasserbauer


Mikrochimica Acta | 2000

Investigations on the Thermal Cycling Stability of SiFeCr Coated NbtZr

M. Gritsch; K. Piplits; Roland Barbist; Peter Wilhartitz; Herbert Hutter


Mikrochimica Acta | 2000

Local Ions Distribution Inhomogeneities in Polymer Based Light Emitting Cells

M. Gritsch; Herbert Hutter; Leo Holzer; Stefan Tasch


Surface Science | 2000

Investigations on the oxidation behavior of technical molybdenum foils by means of secondary-ion mass spectrometry

M. Gritsch; K. Piplits; Herbert Hutter; Peter Wilhartitz; H. Wildner; H.P. Martinz


Fresenius Journal of Analytical Chemistry | 1999

Application of scanning SIMS techniques for the evaluation of the oxidation behavior of high-purity molybdenum

M. Gritsch; C. Brunner; K. Piplits; Herbert Hutter; Peter Wilhartitz; A. Schintlmeister; H. P. Martinz


MRS Proceedings | 2000

Ion Beam Induced Chemical Vapor Deposition of Dielectric Materials

Heinz D. Wanzenboeck; Alois Lugstein; H. Langfischer; Emmerich Bertagnolli; M. Gritsch; Herbert Hutter


Dielectric Materials, Measurements and Applications, 2000. Eighth International Conference on (IEE Conf. Publ. No. 473) | 2000

Ion beam induced deposition of dielectric nanostructures

Heinz D. Wanzenboeck; Alois Lugstein; H. Langdischer; Emmerich Bertagnolli; M. Gritsch; Herbert Hutter


Symposium on silicon nitride and silicon dioxide thin insulating films | 2003

Direct-write deposition of silicon oxide: The express lane towards patterned thin films

Heinz D. Wanzenboeck; S. Harasek; Emmerich Bertagnolli; M. Gritsch; H. Hutter; Josef Brenner; H. Störi; Ulf Grabner; Gerold Hammer; P. Pongratz

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Herbert Hutter

Vienna University of Technology

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K. Piplits

Vienna University of Technology

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Emmerich Bertagnolli

Vienna University of Technology

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Heinz D. Wanzenboeck

Vienna University of Technology

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Alois Lugstein

Vienna University of Technology

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C. Brunner

Vienna University of Technology

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H. Hutter

Vienna University of Technology

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Stefan Tasch

Graz University of Technology

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F. P. Wenzl

Graz University of Technology

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