Doctoral Positions in Germany
PhD-Position: Motion and Charge Transport at the Single Molecule Level • Fritz-Haber-Institut der Max-Planck-Gesellschaft • Berlin
|Time Span||as soon as possible for 3 years|
|Application Deadline||30 Jun 2019|
|Type of Position||
|Field of Research||
|Description||The functional units in organic devices are synthesized with atomic precision. The resulting miniaturization of the integrated circuit will increase the performance while reducing the power consumption. Key for the development of organic devices is a profound understanding of the charge transport on a single molecular level. Scanning probe microscopy (SPM) became a powerful tool for the investigation of nanostructures as well as for single molecules - the core of organic devices. Recent experiments confirmed that the environment, the conformation and the coupling of molecular wires have a strong influence on its charge transport properties.
We developed a new silicon sample for SPM that hosts an integrated circuit. In contrast to molecular break junction and SPM pulling experiments, the adsorption geometry and position of the molecules can be fully characterized by SPM imaging while studying their electrical properties. These novel samples are developed at the NPZ clean room facilities of the TU-Berlin. In a next step we want to extend the integrated circuit to nanoscopic contact patches with scanning tunneling hydrogen resist lithography. This allows us to fabricate electrodes which are as small as two atomic rows and act as gate, source or drain in single-molecule transport measurements.
This setup is unique because the SPM tip can characterize the chemical structure of the molecule with sub-molecular resolution so that we are able to correlate the measurement signals to the precise chemical composition of the junction. Further we can position individual molecules with nm precision by STM manipulation and most importantly, the SPM tip can act as an additional electrode which can be placed with Angstrom precision. This tool box allows us to study charge transport on a molecular level with highest control.
• Exciting research in a dynamic Max Planck group located in the Berlin science area
• Excellent supervision and education, including the International Max Planck Research School
How to apply? Please mail us
• Your scientific CV and university certificates with marks
• A motivation letter (max. 1 page) why you want to join the group. Only applications with this motivation will receive our full attention.
• An excellent master’s degree in physics or related subject
• Background in solid-state physics, low temperature scanning probe microscopy and/or device fabrication
|Language of Dissertation||
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