The future of energy: recommendations from science to politics
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Experts from HZB have contributed their expertise to the position papers briefly presented here. The topics include the development of innovative materials for a sustainable energy supply and the circular economy. Experts from different areas have jointly formulated solutions and recommendations for action.
Opportunities and challenges for the further development of energy research funding
This impulse paper was written by the advisory board for the energy research programme for applied energy research. This advisory board has the task of advising the Federal Government's Energy Ministry on the development of energy research funding and transfer. In the paper, the members from industry and research emphasise specific areas for action and make suggestions. For example: "We recommend that research and industrial policy objectives be more closely interlinked and addressed in suitable programmes. This includes agile project formats, which are particularly attractive for start-ups, as well as large programme lines in which consortia of companies cooperate with scientific institutions along value chains through to application."
To the position paper (Ger) >
Press release of the Federal ministry of economic affairs and climate action >
Innovative materials: the key to an affordable, safe and sustainable energy supply
This report was written by the Helmholtz Energy research field. It provides an overview of the development of innovative materials for sustainable energy systems and recommendations for action to politicans: the contents include the promotion of multidisciplinary research projects, investment in modern research infrastructures and the strengthening of industrial competitiveness as well as the creation of an innovation-friendly regulatory environment.
To the position paper (Ger) >
Circular economy as the basis for a secure and sustainable supply of raw materials and energy
This position paper was also written by Helmholtz Energy and emphasises the need for a sustainable circular economy to protect planetary resources and the environment, reduce dependence on imports and secure energy supplies.
To the position papier (Ger) >
Building a resilient solar industry
This position paper has been formulated by the German solar research and industry and contains strategic
recommendations for strengthening the solar industry and the energy transition.
To the position paper (Ger) >
- Magnetic imaging: Micro-flowers increase the local magnetic fieldMaterials with magnetic nanostructures have many potential applications such as in spintronics. To explore such materials, nanoscale magnetic-sensitive imaging techniques are very useful, but up to now only weak magnetic fields could be applied during the imaging process. Now an international collaboration led by Dr. Sergio Valencia, HZB, has developed an approach that overcomes this limitation. The team designed tiny magnetic flux concentrators (MFCs), into which the sample is placed. The geometry of the MFCs resembles a flower with a number of petals which focus the applied magnetic field into its center. This greatly expands the magnetic field range available during imaging, and so the range of magnetic systems that can be investigated. The micro-flowers, enhancing magnetic fields locally, can find application in different nanometric magnetic microscopy techniques.
- CIGS-perovskite tandem cell achieves record efficiency of 25.5 %A Berlin-based team from HZB and Center for the Science of Materials Berlin (CSMB) at the Humboldt-Universität zu Berlin has set a new record for a tandem solar cell. Using a combination of a CIGS semiconductor layer and perovskite, along with several optimised intermediate layers, they were able to convert 25.5% of sunlight into electrical energy. The previous record for this combination of materials and this size of cell stood at 24.6%. The new record has been certified and is visible in the prestigious Solar Cell Efficiency Tables (the "Green Tables"), which serve as the definitive ledger for the global photovoltaic community.
- 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.