Advent calendar - December 8th - Julia Kraft

In the Zernike Institute Advent Calendar, we are presenting 24 short spotlights in December. In these specials, we highlight PhD students, postdocs, support staff and technicians of our research groups and team - providing a glimpse into their typical day at work. In Episode 8 meet Julia Kraft, PhD researcher in the Nanomaterials Chemistry group of Prof. Loredana Protesescu.

I am a third-year PhD student in the Nanomaterials Chemistry group led by Professor Loredana Protesescu. Our research focuses on developing new solution-processable routes for the synthesis of metal halide and chalcogenide perovskites. A central part of our work is the design and fundamental understanding of reactive molecular ink systems, which serve as precursors in the formation of a wide range of perovskite and perovskitoid materials.

The concept behind these inks is straightforward: by dissolving or complexing different metal salts with specific solvents and ligands, we form reactive molecular complexes that, upon post-processing, transform into our desired inorganic material. The challenge, however, lies in the details, as even minimal changes in ink composition can drastically alter molecular interactions, which lead to different nanostructures and material properties.

Our goal is to gain an in-depth understanding of the molecular mechanisms governing these inks, which will allow us to enable the design of more rational, robust, and versatile formulations. As part of the SolarLab consortium, my project aims to develop stable, scalable halide and chalcogenide perovskite molecular inks that can be readily implemented in photovoltaic device fabrication.

Outside the lab, I love travelling and exploring new places—especially discovering new cuisines and local dishes. I also enjoy cooking, with many of my recipes inspired by my travels.

See all Advent Calendar items 2025 here!