Open Positions

Scientist (f/m/d)
Physics, Chemistry, Materials Science - completed with a PhD

Category

Academics / Scientists / Engineers (master´s degree) (f/m/d)

Job description

You will pursuing the in-depth research of energy-relevant materials (such as in solar cells, batteries and catalysts) using electron and x-ray spectroscopy tools with ex situ, in situ and operando approaches. Furthermore, you will participate in the continuing development of the experimental setups and spectroscopic tools. The position will include activities in the area of project management and the acquisition of research funding. In addition, you will supervise students at the Bachelor, Master and PhD level in their day-today activities and have the opportunity to participate in teaching activities at KIT.

Personal qualification

You have a PhD in Physics, Chemistry or Material Science with several years of experience in the field of electron and/or x-ray spectroscopy. Furthermore your are familiar with ultra-high vacuum instrumentation and the development of experimental setups. As you will joining an internationally operating research group, a good command of the English language is required. Command of the German language will be helpful but is not necessarily required.

Salary

Salary category 13, depending on the fulfillment of professional and personal requirements.

 

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31-2021-IPS PhD Position: Soft x-ray spectroscopy of transition metal oxide electrocatalysts

Category

PhD students (f/m/d)

Job description

The Institute for Photon Science and Synchrotron Radiation (IPS) is announcing a PhD position (EG 13, 75 %) in the field of electronic structure characterization of transition metal oxide electrocatalysts.

In the framework of an international joint project between the Pennsylvania State University (Penn State) and the KIT, funded by the U.S. National Science Foundation (NSF) and the German Science Foundation (DFG), you will work on further developing cutting-edge soft x-ray spectroscopy to describe the electronic (and chemical) structure of FexNi100-xO(H)y electrocatalyst materials. These materials are at the forefront of alkaline electrocatalysis, including the oxygen evolution half reaction (OER) of water electrolysis. For further development of these catalysts, an in-depth understanding of the d-state electronic structure of Fe (and Ni) in these oxides is essential. To do this, the project combines coordinated soft x-ray spectroscopic, electrochemical, and theoretical investigations of the electronic structure of FexNi100-xO(H)y and other AxB100-xO(H)y transition metal oxides.

X-ray spectroscopy experiments are conducted at the X-SPEC beamline at the KIT synchrotron and the Advanced Light Source (Lawrence Berkeley National Laboratory, USA). Your thesis will be embedded in the described international research network with regular exchange visits.

Responsibilities

  • Characterization of the chemical and electronic structure of FexNi100-xO(H)y and other AxB100-xO(H)y transition metal oxides
  • Further developing and optimizing the x-ray spectroscopy techniques for the investigated material system
  • Planning and conducting experiments in the lab at KIT and at synchrotron light sources in Germany and the U.S.
  • Maintenance and optimization of ultra-high vacuum (UHV) spectroscopy systems

Personal qualification

  • Masters (Diploma) in Physics, Chemistry, Material Science, or equivalent
  • Experience in handling UHV equipment
  • Preferably experience in x-ray and electron-based spectroscopies (XPS, UPS, IPES, XES, and/or XAS)
  • Enthusiasm for team-based science and its application in electrocatalysis
  • Very good English skills

 

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IPS 01-21 Bachelor/Master Arbeit zum Thema: Herstellung und Charakterisierung von ultradünnen Silberkontakten

Category

Final Thesis (Bachelor and Master Thesis)

Job description

Elektrische Kontakte und Leiterbahnen spielen eine wichtige Rolle bei der Herstellung von optoelektronischen Bauelementen. Ihre Miniaturisierung stößt jedoch auf eine fundamentale Schwierigkeit: bei Deposition auf den in der Mikroelektronik verwendeten schwach wechselwirkenden Substraten (Silizium, Siliziumoxid,…) zeigen die häufig verwendeten Edelmetalle (Ag, Au, Pd,…) eine starke Tendenz zur Inselbildung und Entnetzung. Elektrisch leitfähig ist das Material jedoch erst nach Perkolation dieser Cluster.

Die Oberflächenphysik nutzt verschiedene Tricks, um eine möglichst frühe Perkolation zu erreichen. Dazu gehört der Einsatz von „Surfactants“: chemische Zusätze verändern die Energielandschaft des Systems und ermöglichen so die Kontrolle der Wachstumsprozesse auf atomarer Skala. Ein besonders erfolgversprechender Surfactant ist Germanium, das die Perkolationsdicke von Silber um mehr als eine Größenordnung, von 6-8 nm auf ~0.5 nm, reduziert.

Das Ziel dieser Arbeit ist es, den Wirkungsmechanismus dieses Prozesses zu untersuchen. Auf Basis der quantitativen Datenanalyse und anhand von Modellrechnungen werden geeignete physikalische Modelle identifiziert, die den Einfluss der Surfactants auf die Strukturbildung beschreiben. Hierzu werden ultradünne (Ag,Ge) Schichten mittels Sputterdeposition hergestellt und mit Methoden der Oberflächencharakterisierung (z.B. XPS, AFM, Röntgenstreuung) untersucht. Die Arbeit ist eingebettet in eine deutsch-französische Kollaboration mit dem Institut PPrime (Univ. Poitiers) und liefert komplementäre Informationen zu in situ Röntgenexperimenten am Synchrotron.

Personal qualification

  • Sie studieren Physik, Materialwissenschaften, Chemie oder verwandte Fächer.
  • Sie sind bereit sich in neue Themen und Methoden einzuarbeiten.
  • Sie haben Interesse an Oberflächen- und Grenzflächenphysik.
  • Neugierde, selbständige Arbeitsweise und Spaß am Knobeln runden Ihr Profil ab.

 

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Higher Education Opportunities at the Institute for Photon Science and Synchrotron Radiation

If you are interested in being involved in research at the Institute of Photon Science and Synchrotron Radiation, please feel free to contact us. We generally offer projects for Batchelor and Master Theses in the following areas:

Projects for doctoral research are updated as and when available.