SFB 595:  Electric Fatigue in Functional Materials

• Subject Area: Materials Science and Engineering ; Chemistry ; Geosciences ; Computer Science, Systems and Electrical Engineering
• Term: from 2003 to 2014
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 5485550

The aim of this Collaborative Research Centre of excellence in the first phase is the understanding of the mechanisms leading to electrical fatigue. The second phase is designed to use this knowledge for innovative material concepts and their evaluation. New simple components are scheduled to be developed during this phase. Suitable synthesis methods need to be created and complementary characterization of materials and components is required. An understanding of the experimental results is supported by concurrent materials. A key feature of the Research Centre is therefore the steady comparison between theory and experiment. This is utilized to find the physico-chemical origins of electrical fatigue as well as to develop strategies for new materials and improved material combinations.

• DFG Programme: Collaborative Research Centres

Completed projects

• A01 - Manufacturing of ceramic, textured actuators with high strain (Project Head Rödel, Jürgen )
• A02 - Herstellung und Charakterisierung von PZT-Keramiken unter Gleichfeldbeanspruchung (Project Head Hoffmann, Michael J. )
• A03 - Boundary layers and thin films of ionic conductors: Electronic structure, electrochemical potentials, defect formation and degradation mechanisms (Project Head Jaegermann, Wolfram )
• A04 - Novel functional ceramics using anionic substitution in oxidic systems (Project Head Riedel, Ralf )
• A05 - Synthesis of semiconducting model polymers and their characterization before and after cyclic electrical fatigue (Project Head Rehahn, Matthias )
• B01 - EPR Untersuchungen von Defekten in ferroelektrischen keramischen Werkstoffen (Project Heads Dinse, Klaus-Peter ;  Eichel, Rüdiger-A. )
• B02 - Untersuchung der Defektstruktur und Diffusion in ferroelektrischen Materialien (Project Head Balogh, Adam Georg )
• B03 - Structure characterization of piezoelectric ceramics with respect to electrical fatigue (Project Heads Donner, Wolfgang ;  Kleebe, Hans-Joachim )
• B04 - In situ investigations of the degradation of intercalation batteries and their modelling (Project Head Ehrenberg, Helmut )
• B05 - Modellversuche zur Wechselwirkung ferroelektrischer Domänen mit Punktdefekten und deren Agglomeraten (Project Heads Lupascu, Doru Constantin ;  Rödel, Jürgen )
• B07 - Polarisation and charging in electrical fatigue ferroelectrics (Project Heads Klein, Andreas ;  von Seggern, Heinz )
• B08 - In situ diagnostic of intercalation batteries with Ramanspectroscopy (Project Head Hess, Christian )
• B09 - Characterization of structure-property-relationships of electrical functional materials with Solid State-NMR (Project Heads Breitzke, Hergen ;  Buntkowsky, Gerd )
• C01 - Quantum mechanical computer simulations for electron and defect structure of oxides (Project Head Albe, Karsten )
• C02 - Atomistic computer simulations of defects and their mobility in metal oxides (Project Head Albe, Karsten )
• C03 - Mikroskopische Untersuchungen zur Defektagglomeration und deren Auswirkung auf die Beweglichkeit von Domänenwänden (Project Heads Becker, Wilfried ;  Müller, Ralf )
• C05 - Phenomenological modelling of injection, transport and recombination in organic semiconducting devices as well as in inorganic ferroelectric materials (Project Heads Genenko, Yuri A. ;  von Seggern, Heinz )
• D01 - Mesoscopic and macroscopic fatigue in doped ferroelectric ceramics (Project Head Rödel, Jürgen )
• D03 - Function and fatigue of oxide electrodes in organic light emitting diodes (Project Head Klein, Andreas )
• D04 - Fatigue of organic electronic devices (Project Heads Gassmann, Andrea ;  von Seggern, Heinz )
• D05 - Herstellung und Charakterisierung von Li-Ionen Dünnschichtbatterien (Project Head Jaegermann, Wolfram )
• MGK - Fellowship Program (Project Head Klein, Andreas )
• T01 - In operando investigations of material fatigue in commercial battery types by neutron tomography and -diffraction (Project Head Ehrenberg, Helmut )
• T02 - Effect of PbO stoechiometry on the microstructure and properties of PZT ceramics and multilayeractuators (Project Head Hoffmann, Michael J. )
• T03 - "in operando" study of Li(Ni,Co,Mn)O2 cathode materials (NCM) by local and global methods of structure investigation - materials modification and fatigue (Project Head Ehrenberg, Helmut )
• Z02 - Central administration and management (Project Head Rödel, Jürgen )

• Applicant Institution: Technische Universität Darmstadt
• Participating University: Karlsruher Institut für Technologie (KIT) ; Campus Süd (aufgelöst)
• Spokespersons: Professor Dr. Karsten Albe, since 7/2012; Professor Dr.-Ing. Jürgen Rödel, until 6/2012