Autumn School on Microstructural Characterization and Modelling of Thin Film Solar Cells
From November 2 ‐ 7, 2014, an Autumn school is organised as part of the Helmholtz Virtual Institute Microstructure Control for Thin‐Film Solar Cells
Contact: autumn.school@helmholtz-berlin.de
In research and development of solar cells, the issue of microstructure and its impact on the device performance is often regarded inadequately, mostly because of insufficient knowledge about analysis and simulation methods. Apart from the microstructural properties of completed thin films in semiconductor devices, it is also of concern how the microstructure develops during growth.
The school aims at giving insight into various techniques for microstructural analysis as well as simulation methods of the growth of crystalline materials apart from a session on electricalmaterials and device characterization. Each session will comprise a keynote lecture of an expert in the corresponding field, followed by a 2‐3 hours hands‐on tutorial, giving the participants the possibility to get deeper into the topic, with the help of a specific question to be solved in teamwork practices.
Two poster sessions are also planned as evening events, which intensify the discussions and scientific exchange between experts and participants.
- Lithium-sulphur batteries with lean electrolyte: problem areas clarifiedUsing a non-destructive method, a team at HZB investigated practical lithium-sulphur pouch cells with lean electrolyte for the first time. With operando neutron tomography, they could visualise in real-time how the liquid electrolyte distributes and wets the electrodes across multilayers during charging and discharging. These findings offer valuable insights into the cell failure mechanisms and are helpful to design compact Li-S batteries with a high energy density in formats relevant to industrial applications.
- Self assembling monolayer can improve lead-free perovskite solar cells tooTin perovskite solar cells are not only non-toxic, but also potentially more stable than lead-containing perovskite solar cells. However, they are also significantly less efficient. Now, an international team has succeeded in reducing losses in the lower contact layer of tin perovskite solar cells: The scienstists identified chemical compounds that self-assemble into a molecular layer that fits very well with the lattice structure of tin perovskites. On this monolayer, tin perovskite with excellent optoelectronic quality can be grown, which increases the performance of the solar cell.
- Berlin Science Award goes to Philipp AdelhelmBattery researcher Prof. Dr. Philipp Adelhelm has been awarded the 2024 Berlin Science Award. He is a professor at the Institute of Chemistry at Humboldt University in Berlin (HU) and heads a joint research group at HU and the Helmholtz Zentrum Berlin (HZB). The materials scientist and electrochemist is investigating sustainable batteries, which play a key role in the success of the energy transition. He is one of the leading international experts in the field of sodium-ion batteries.