Bernd Rech boardmember of the "work group of energy"
Bernd Rech will focus on renewable energy issues.
Prof. Bernd Rech will speak on recent findings in thin film silicon photovoltaik research at the autumn meeting of the energy work group of the Deutsche Physikalische Gesellschaft. Rech had been elected into the board of the work group earlier this year.
Main topic will be polycrystalline silicon thin films on glas. HZB researchers were able to increase the efficiency of these solar cells considerably
As speaker of the renewable energy program of the Helmholtz Association, Bernd Rech intends to discuss issues of the turnaround in energy policy in his new role in the DPG.
The autumn meeting of the DPG energy work group wil be in Bad Honnef on October 1 and 2. The Deutsche Physikalische Gesellschaft is an organisation that has as its member scientists working in universities, research institutions, and the industry as well as teachers and (PhD-)students. There are also about 160 institutional members.
- Disorder creates new properties in compound semiconductorsAn international research team has demonstrated that the intrinsic disorder of the compound semiconductor CuInSnS₄ can be exploited to influence its optical properties. While the atomic vibrations also sense the local disorder, their response is averaged over many different local environments and therefore appear isotropic, as expected for a cubic crystal. In contrast, the optical excitations, known as excitons, are much more sensitive to the local arrangement of atoms. Surprisingly, they show a direction-dependent optical response even though the average crystal structure is cubic. These findings shed new light on the relationship between disorder and material properties, opening up new options for targeted 'disorder engineering' in optoelectronic and photocatalytic devices.
- Perovskite solar cells: Predictions of long-term stabilityReliable statements about the long-term stability of perovskite solar cells are still difficult to make. However, a new study by Dr Carolin Ulbrich’s team, published in the renowned journal Joule, highlights which methods are useful for this purpose and identifies areas where further research is needed.
- Solar experts meet in BerlinThe sixth tandemPV Workshop will take place in Berlin, Germany from June 17-19, 2026, hosted by Helmholtz-Zentrum Berlin.