Poster award to HZB doctoral student
Andriy Zakutayev (NREL), member of the jury, has awarded Fredrike Lehmann for her poster at ICTMC-21 in Boulder, Colorado, USA.
Frederike Lehmann from the HZB Department Structure and Dynamics of Energy Materials received a poster award at an international conference, the ICTMC-21 in Boulder, Colorado, USA. She presented her results on the synthesis and characterization of hybrid perovskite materials, which are considered interesting candidates for novel solar cells.
Frederike Lehmann is doing her doctorate at the HyPerCell graduate school in the department of Prof. Dr. Susan Schorr on different hybrid perovskite materials. This class of materials is extremely interesting for novel and inexpensive solar cells.
Frederike Lehmann does not only produce these materials using various synthesis methods, but also characterizes their structure and analyzes their optical and electronic properties. "I am also trying to modify these properties through targeted doping or substitution of certain elements in hybrid perovskites by other elements or chemical building blocks," explains Lehmann. For example, with the goal to vary the band gap and simultaneously increase the material stability in order to optimise those materials for solar cells.
At the 21st International Conference on Ternary and Multinary Compounds (ICTMC-21), which took place in Boulder, Colorado, USA, in September, Frederike Lehmann presented her work with a poster and received an award for her contribution.
Title of the poster: „Stabilizing the cubic phase of the triple cation hybrid perovskite (FA1-xMAx)1-yCsyPbI3 solid solution”
Conference website: https://sites.google.com/view/ictmc21/home
arö
https://www.helmholtz-berlin.de/pubbin/news_seite?nid=14958;sprache=en
- Copy link
-
Battery research with the HZB X-ray microscope
New cathode materials are being developed to further increase the capacity of lithium batteries. Multilayer lithium-rich transition metal oxides (LRTMOs) offer particularly high energy density. However, their capacity decreases with each charging cycle due to structural and chemical changes. Using X-ray methods at BESSY II, teams from several Chinese research institutions have now investigated these changes for the first time with highest precision: at the unique X-ray microscope, they were able to observe morphological and structural developments on the nanometre scale and also clarify chemical changes.
-
Martin Keller elected new president of the Helmholtz Association
The Helmholtz Association has appointed internationally respected US-based scientist Martin Keller as its new president. Her has lived in the United States for nearly three decades, during which he has held various scientific leadership roles at prominent institutions. Since 2015, Keller has directed the National Renewable Energy Laboratory (NREL) in Golden, Colorado. His term begins on 1.11. 2025.
-
Rutger Schlatmann re-elected as ETIP PV Chair
The European Technology and Innovation Platform for Photovoltaics (ETIP PV) was created by the European Commission in order to promote photovoltaic technologies and industries in Europe. Now, the ETIP PV Steering Committee elected a new Chair, as well as two Vice-Chairs for the term 2024 – 2026. Rutger Schlatmann, head of the division Solar Energy at the HZB, and professor at HTW Berlin, was re-elected as the ETIP PV Chair.