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Investigations of Thin Films of Organic Semiconductors on Graphene

Department of Condensed Matter Physics

Dr Jiri Novak Monday, April 19, 2021 Funded PhD Project (Students Worldwide)

About the Project

The Ph.D. research will be focused on the preparation and structural characterization of thin films of organic semiconductor molecules (OSMs) on graphene. The studied systems serve as channels in future optoelectronic devices based on OSMs, where graphene may be used as an electrode. In these devices, the structure of the molecular layer plays a defining role in the device performance. The OSM films will be prepared using organic molecular beam deposition in ultra-high vacuum and characterized by x-ray scattering/diffraction and atomic force microscopy. An important subject of the study is the relation of the thin film structure with the initial growth, i.e. structure and morphology of the first few molecular layers, which will be determined by low energy electron diffraction and microscopy (LEED and LEEM, respectively). Selected analytical techniques will be applied in-situ during the growth or during the post-growth annealing either in the home laboratory or at synchrotrons. The goal of the research is to get insight into the relation between the film growth parameters (e.g. substrate temperature) and the film structure and morphology.

Experiments will be performed using the unique equipment of CEITEC Nano Infrastructure, the national joint research infrastructure of the Central European Institute of Technology of Brno University of Technology and Masaryk University (see

The PhD candidate is expected to join our research in one of the following research activities:

·       Growth of thin films of organic semiconductors using organic molecular beam deposition in UHV and necessary substrate preparation optimization.

·       Thin films characterization using atomic force microscopy and x-ray scattering techniques.

·       Optimization and improvements of experimental setups.

·       Assistance during LEEM and LEED measurements and collaboration with colleagues in the deposition UHV-cluster and x-ray laboratories framework.

·       Participating in teaching.

·       Performing simulations to interpret experimental data and to plan experiments.

Required Skills and Qualifications:

·       Applicants should have or be very close to obtaining a master’s degree in either Condensed Matter Physics, Materials Science, Physical Chemistry or Chemistry of Solids.

·       Previous hands-on experience in physics and/or chemistry labs.

·       Good communication skills (oral and written) in English.

·       A well-organized person and a team player.

·       High level of commitment to complete the PhD studies

Desirable but not essential: an experience with computer-aided simulations, molecular materials, x-ray scattering techniques, or measurements at synchrotron facilities.

Please send your curriculum vitae, cover letter with a concise summary of your previous research activities, and contacts of two persons who might provide references to Dr. Novak

Selection Process

Received applications will be continuously reviewed and carefully considered. Shortlisted applicants meeting the requirements will be invited to an interview.  Details including discussion about the research topic required documentation or formalities will be the subject of the interview with successful candidates. Only upon the informal pre-agreement with potential future supervisor, a formal application for PhD studies can be submitted - official admission process to Ph.D. studies at SCI MUNI.

Funding Notes

In addition to the standard PhD scholarship at Masaryk University (CZK 12 000 per month), additional funds are provided through departmental resources (assignment in research projects, additional scholarships). An overall monthly net income is at least CZK 23 000. Additional support includes performance-based bonuses (scholarships for successfully published papers) as well as support for international mobility or attendance of conferences etc.

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