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The Graduate School "Materials for Solar Energy Conversion (MatSEC)" is looking for:

PhD-Scholarship Student (f/m)

Kennziffer: MatSEC 2016/4

The Graduate School “Materials for Solar Energy Conversion” (MatSEC) combines experiment and theory in the areas of material science, crystallography, solid state physics, solid state chemistry, and scientific computing to develop structure-property relations which allow for the design of custom-made materials for solar energy conversion.

MatSEC is a member of Dahlem Research School (DRS), which provides a structured graduate education at Freie University Berlin.

Topic of the doctoral Thesis:
Charge and Heat Carrier Transfer across Interfaces in Structured Thermoelectric Materials

In the framework of a new project, the student will study hybrid thermoelectrics which consist of structured semiconductors and functionalized organic molecules. An essential motivation to study this material is to identify and benefit from synergetic effects, if thermoelectric characteristics of the materials do not simply relate to averaged properties of its individual constituents.

Tasks

The student will strongly focus on the study of the electronic charge transport across inorganic-organic interfaces, a defining mechanism of efficient hybrids. The PhD candidate will apply macroscopic techniques (Hall, DSC, DTA, LFA, PPMS, µ-position sensitive Seebeck probe) as well as microscopic characterization probes (X-rays). The application of soft X-ray spectroscopy to identify electronic states at the inorganic-organic interfaces plays a key role in the studies and will be complemented by structural hard X-ray investigations. For this purpose, HZB provides a multitude of suitable soft X-ray instruments, e.g. the newly commissioned PEAXIS endstation at the synchrotron BESSY II. Hard X-ray instrumentation is available at the X-Ray CoreLab operated by HZB. Electronic studies will be accompanied by macroscopic heat transport measurements on the hybrids to achieve full thermoelectric characterization.

Requirements

  • Completed master degree in physics or material sciense
  • Strong background in soft X-ray spectroscopy and solid state physics. It is expected, that the candidate heavily exploits available experimental infrastructure at BESSY II to achieve the project objectives.
  • Good verbal and written communication skills in English

  • HZB grants PhD scholarship for the development of qualified junior scientists. The Phd scholarship is limited to 3 years. The amount of the PhD scholarship complies with the valid PhD scholarship allowances of DFG.

    We particularly welcome applications from women. Preference will be given to handicapped applicants provided equal suitability.

    Have we sparked your interest? Then we look forward to receiving your application by 15.01.2017

    Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
    Hahn-Meitner-Platz 1
    14109 Berlin
    www.helmholtz-berlin.de
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