Helmholtz Innovation Labs: HySPRINT at HZB
HZB will be setting up the new Helmholtz HySPRINT Innovation Lab for jointly developing new combinations of materials and processes in energy applications with commercial partners. Silicon and metal-organic perovskite crystals will be the centre point of the Lab’s work. The Helmholtz Association is supporting the project for the next five years with 1.9 million Euros from its Initiative and Networking Fund, with additional contributions from HZB itself as well as from industry.
The Helmholtz Association is supporting a total of seven Helmholtz Innovation Labs in order to strengthen the transfer of research results to the applications domain. The Association is making about twelve million Euros available over the next five years for setting up and operating the Innovation Labs.
The HZB proposal was selected from a field of 27 competing applications. HySPRINT stands for “Hybrid Silicon Perovskite Research, Integration & Novel Technologies”. It will focus on hybrid materials and components based on silicon and perovskite crystals able to be employed for energy conversion in photovoltaics as well as for solar hydrogen production.
“We intend to further develop silicon hybrid technology, liquid-phase crystallisation of silicon, nano-print lithography as well as the implementation of prototypes by means of 3D techniques for microcontacts in cooperation with industrial partners – and demonstrate the potential for industrial-scale production”, says Professor Bernd Rech from the HZB Institute for Silicon Photovoltaics.
The Innovation Lab will be set up as a core lab at HZB and will work closely with the HZB Institute PVcomB. Professor Anke Kaysser-Pyzalla, Scientific Director of HZB poitbs out: “HySPRINT will establish itself as a creative pillar of Technology Transfer at HZB and within the Helmholtz Association.”
- 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.
- 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.