PhD student fmd K 1325

The LeibnizInstitut fr Kristallzchtung (IKZ) is a leading research institution in the field of science & technology as well as service & transfer of crystalline materials. Our goal is to enable solutions for pressing societal challenges (e.g. communication artificial intelligence climate protection health etc. through modern electronic & photonic technologies. The work covers the entire spectrum from basic and applied research to preindustrial development and is carried out in cooperation with national and international partners from universities academies and industry. The institute is part of the Forschungsverbund Berlin and a member of the Leibniz Association . You can find more details on the institute webpage: .

The LeibnizInstitut fr Kristallzchtung is currently looking for a

PhD student (f/m/d)

for the BMBF NanoMatFutur funded project AllGOHEMT with the topic:

Growth and characterization of modulationd (Al_xGa_1x2O₃/Ga₂O₃ heterostructures with high electron mobility for highly efficient power transistors

Semiconductorbased power electronics is a key technology for solving the greatest challenge facing society sustainable energy generation. In addition to the conversion of energy generation to renewable and decentralized sources the efficient use of energy is the most important lever for achieving sustainability goals in the energy sector. More efficient power electronics not only help to reduce harmful emissions through more efficient use of energy but also increase the costeffectiveness of energyintensive processes. Gallium oxide (Ga₂O₃ is currently the subject of intensive research and development activities in the field of semiconductor power electronics. With its ultrawide band gap it enables an even more compact design and is therefore ideal for applications in power electronics. Even though power electronics based on Ga₂O₃ promise to be more efficient the material is inferior to established materials in terms of charge carrier mobility. The central goal of the project is to overcome the material limitation of Ga₂O₃ in terms of charge carrier mobility with the help of the innovative design of an aluminumalloyed heterostructure and thus eliminate this disadvantage. Our research group is widely recognized as one of the leading teams in this field and this position will provide you with a unique platform to make significant contributions to the scientific community of oxides for power electronics. As part of the AllGOHEMT project we are ultimately going to create a material basis for aluminumalloyed gallium oxidebased high electron mobility transistors.

As a PhD student you will contribute to the project by developing the growth of the layers via metalorganic vaporphase epitaxy (MOVPE). The evaluation of the growth will be done by Xray diffraction (XRD) atomic force microscopy (AFM) ellipsometry and electrical transport (Van der Pauw and Hall) measurements. Ultimately it is the PhD students task to develop growth models and optimize the growth on this basis. The selected student will mainly work with state of the art MOVPE equipment and will benefit from the unique selling points of IKZ which performs inhouse bulk crystal growth thin film epitaxy and advanced materials characterization. Do application focused material research with the aim to make energy conversion more efficient and make your contribution to meeting the EU CO₂ NetZero targets! AllGOHEMT do you go too

The key responsibilities of the PhD student will include:

• Developing the epitaxial growth of (Al_xGa_1x2O₃/Ga₂O₃ heterostructures with high aluminum content by metalorganic vaporphase epitaxy (MOVPE)
• Performing processaccompanying standard characterization (e.g. AFM Ellipsometry XRD Halleffect measurements)
• Unraveling the growth mechanics and developing growth models
• Optimizing growth parameters utilizing deep learning algorithms
• Foster strong collaborations with scientists from structural characterization and electrical characterization to promote interdisciplinary research
• Develop an international reputation and broaden your experience and skills to prepare for your future career inside or outside academia on the one hand and to strengthen the experimental expertise of IKZ on the other

The applicant must have the following minimum qualification:

• A masters degree and strong knowledge in physics chemistry crystallography materials science or a related discipline
• Experience in experimental work sample handling and preparation
• Basic knowledge of fundamental and solidstate physics
• Ability to work within an interdisciplinary team of scientists engineers and students
• Exceptional communication skills both verbal and written in English
• Effective analytic and problemsolving skills

In addition some of the following skills and qualifications would be preferred:

• Experience in epitaxial growth preferably of oxides
• Experience in semiconductor physics with respect to electrical transport
• Distinctive programming skills preferably in Python Matlab or C

What we offer:

The position is embedded in the BMBF NanoMatFutur project AllGOHEMT. Within this project the position is available from January 1 2025 and is limited to three years with the possibility to be extended by one year. Payment is according to TVD Bund (E13 75 (Collective agreement for the public sector). The contract includes the usual social benefits 30 vacation days in a 5day week flexible working hours). The LeibnizInstitut fr Kristallzchtung actively promotes the development of young scientists and follows the guidelines of the Leibniz Association.

The LeibnizInstitut fr Kristallzchtung actively supports a healthy worklife balance and is an equal opportunities employer. Female candidates are encouraged to apply and will be given preference if suitably qualified. Among equally qualified candidates preference will be given to candidates with disabilities. IKZ promotes diversity. We welcome every qualified application regardless of age belief disabilities ethnic origin gender nationality religion or sexual orientation.

If you want to have more information about the project please contact us:
Dr. Andreas Fiedler
Dr. Andreas Popp

Have we aroused your interest

Then apply with a letter of motivation curriculum vitae and all relevant certificates. To do so please go to Job offers/jobs on our homepage and click on this advertisement and then on Apply online. Applications will be accepted until the position is filled.

We look forward to receiving your application!