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Perovskite solar cells: Interfacial loss mechanisms revealed
Metal-organic perovskite materials promise low-cost and high-performance solar cells. Now a group at HZB managed to de-couple the different effects of self-assembled monolayers of organic molecules (SAMs) that reduce losses at the interfaces.
Lead-free perovskite solar cells - How fluoride additives improve quality
Using a clever combination of measurement methods at BESSY II and with NMR at the Humboldt-University Berlin, they were able to show that fluoride prevents the oxidation of tin and leads to a more homogeneous film formation with fewer defects.
VIPERLAB: EU project aims to boost perovskite solar industry in Europe
HZB is coordinating a major European collaborative project to open up new opportunities for the European solar industry. The VIPERLAB project involves 15 renowned research institutions from Europe, as well as Switzerland and Great Britain.
Perovskite/silicon tandem solar cells on the threshold of 30% efficiency
The tandem cell provided stable performance for 300 hours – even without encapsulation. To accomplish this, the group headed by Prof. Steve Albrecht investigated physical processes at the interfaces to improve the transport of the charge carriers.
Optimize opto-electronic devices with new compact measuring system
In order to develop efficient opto-electronic devices such as solar cells or LEDs, it is crucial to improve the quality of the semiconductors. To achieve this, it is necessary to determine the luminescence yield of the semiconductor material. For this ...
On the road to non-toxic and stable perovskite solar cells
To replace lead by less toxic elements is not easy since lead-free perovskites show lower stability and poor efficiencies. Now, an international collaboration has engineered a new hybrid perovskite material with promising efficiency and stability.
World Record: Efficiency of perovskite silicon tandem solar cell jumps to 29.15...
In the race for ever higher efficiency levels, an HZB development team is once again ahead. The scientists have developed a tandem solar cell made of perovskite and silicon, which converts 29.15 per cent of the incident light into electrical energy.
Steve Albrecht wins the 2019 Karl Scheel Prize
This year's Karl Scheel Prize from the Physikalische Gesellschaft zu Berlin honours Steve Albrecht of the Helmholtz-Zentrum Berlin für Materialien und Energie for his work in the field of highly efficient tandem solar cell absorbers made of metal-halide ...