Doctoral Student (f/m/d) for Scalable Processing and Characterization of Ionic Liquid-Based Perovskite Solar Cells

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Work group: Solution Processing of Hybrid Materials & Devices Area of research: PHD Thesis Job description: Reference No. SE 2026/10 The Department Solution Processing of Hybrid Materials & Devices is looking for Doctoral Student (f/m/d) for Scalable Processing and Characterization of Ionic Liquid-Based Perovskite Solar Cells Your Tasks You develop and optimize ionic liquid-based precursor inks and investigate their crystallization behaviour under ambient processing conditions using in-situ process metrology techniques. You scale the perovskite thin-film deposition to larger-area devices and modules using solution-based scalable processing methodologies such as slot-die coating. You carry out advanced structural, optical, and spectroscopic characterization of processed thin films. You contribute to process optimization, reliability studies, and international collaboration activities between NUS and HZB. Your Profile Master’s degree in materials science, chemistry, physics, chemical engineering, or related disciplines with strong interest in thin-film photovoltaics Knowledge of laboratory-based materials characterization techniques; experience with perovskites, ionic liquids, or solution chemistry is advantageous Desirable: experience with spectroscopy, XRD, PL, SEM, GIWAXS, coating techniques, or process monitoring methods Excellent teamwork skills and willingness to contribute to an international research programme spanning Singapore and Germany Excellent English skills (C1 level or higher) Please enclose the following documents with your application: Letter of application Curriculum Vitae Degree certificates Further Information Prof. Dr. Eva Unger +49 30 2093 82550 eva.unger@helmholtz-berlin.de Closing Date: 11.09.2026 This research center is part of the Helmholtz Association of German Research Centers. With more than 42,000 employees and an annual budget of over € 5 billion, the Helmholtz Association is Germany's largest scientific organisation.