Ann-Kristin Stief

“For me, working on OER catalyst materials and design for tandem cell-based water splitting is an opportunity to take responsibility for advancing clean energy solutions. Our project, TWOB, allows me to continuously learn and grow as a scientist, driven by my curiosity and passion for materials science.”


Doctoral Researcher
Technical University of Darmstadt


Favicon Sinatra

BMFTR Junior Research Group: Tandem cell-based photoelectrochemical hydrogen production with novel high-entropy electrocatalysts and oxynitride photoabsorbers

Foto: Ahnen&Enkel/Hanna Boussouar

Scientific career and research areas

Ann-Kristin Stief is a material scientist and joined the junior research group TWOB led by Marcus Einert as a doctoral researcher in 2024. She is working on the production of high entropy and transition metal oxides specifically designed for the use as electrocatalysts in the oxygen evolution reaction (OER) by developing an innovative synthesis allowing for precise tailoring of the physicochemical properties of thin films. To this end, she applies sol-gel dip-coating with soft templating by evaporation induced self-assembly of block-copolymers.

Ann-Kristin Stief studied material science at the Technichal University of Darmstadt from 2018 to 2024. During this time she had different short-term missions both in industry and in academia. Particularly, she held the position of working student in the area of pipe class management in 2020 and in 2021 at Merck KGaA in Darmstadt, and had an internship at Stabilus in Coblenz in the field of development in 2021. For her bachelor thesis in the field of composites (2021), she collaborated with the Schunk Group (Heuchelheim, Germany), an industrial machinery manufacturer. Furthermore, in 2022, she got the opportunity to visit the

From Layer-by-Layer Growth to Nanoridge Formation: Selective Area Epitaxy of GaAs by MOVPE
Morgan, N., Dubrovskii, V. G. , Stief A.-K. , Dede, D., Sanglé-Ferrière, M., Rudra, A., Piazza, V., Fontcuberta i Morral, A., 2023. Crystal Growth & Design, 23, 7. https://doi.org/10.1021/acs.cgd.3c00316

Major awards, achievements and scholarships

  • MaWi Award of the TU Darmstadt for an outstanding degree in the M.Sc. Materials Sciences (2024)

  • MaWi Award of the TU Darmstadt for an outstanding degree in the B.Sc. Materials Sciences, (2022)

  • Deutschlandstipendium Scholarship awarded by TU Darmstadt (2022)

  • Deutschlandstipendium Scholarship awarded by TU Darmstadt (2021)

  • Deutschlandstipendium Scholarship awarded by TU Darmstadt (2020)

  • Deutschlandstipendium Scholarship awarded by TU Darmstadt (2019)

  • Deutschlandstipendium Scholarship awarded by TU Darmstadt (2018)

Favicon Sinatra

SINATRA Project

TWOB

TWOB is exploring a new low-temperature approach for the production of thin photoabsorber films to be used for artificial photosynthesis. By combining two such photoabsorbers, a larger spectrum of sunlight can be used for greater efficiency.

The TWOB research group