EPFL does extensive perovskite R&D work and is responsible for many publications and advancements in the field.
The latest EPFL perovskite news:
A recent study by Lawrence Berkeley National Laboratory (Berkeley Lab), Technische Universität München, EPFL and The Pennsylvania State University has found that solar materials manufacturing could be aided by a new instrument that uses two types of light – invisible X-ray light and visible laser light – to probe a perovskite material’s crystal structure and optical properties as it is synthesized.
“When people make solar thin films, they typically have a dedicated synthesis lab and need to go to another lab to characterize it. With our development, you can fully synthesize and characterize a material at the same time, at the same place”, said Carolin Sutter-Fella, a scientist at Berkeley Lab's Molecular Foundry.
Researchers use Cesium-doped Ti3C2Tx MXene for efficient and thermally stable perovskite solar cells
Researchers from The University of Queensland, EPFL, Griffith University and NIMS have studied how doping can help in overcoming some of perovskite solar cells' drawbacks. The researchers found that the efficiency and thermal stability of the doped cells significantly outperformed those that were not doped.
“The PSCs that had doped cells showed a remarkable solar conversion efficiency that exceeded 21 per cent,” the team reported.
Scientists from École Polytechnique Fedérale de Lausanne (EPFL), University of Luxembourg, Empa-Swiss Federal Laboratories for Materials Science and Technology and CNRS have demonstrated a simple approach to designing the interface between two layers in a perovskite solar cell, improving both the performance and stability of the device.
Solar cells fabricated by the group achieved 23.4% conversion efficiency, and were operated for close to 6,000 hours before degrading beyond 80% of this initial value.
Scientists at EPFL and their collaborators have developed a simple and low-cost perovskite-based device that detects neutrons. The perovskite materials used in the study are based on lead and bromine. Both contain single crystals of a compound called methylammonium lead tri-bromide.
The team first placed these crystals in the path of a neutron source. The neutrons, hitting the crystals, penetrate the nucleus of the atoms within the crystal, exciting them into a higher energy state. When they relax and decay, gamma rays are created. These gamma photons charge the perovskite, delivering a tiny current that can be estimated.
A team of scientists at EPFL has come up with an efficient solution to the lead problem of perovskite solar cells, which involves using a transparent phosphate salt that does not block solar light and hence doesn't affect performance.
In case the solar panel fails, the phosphate salt immediately reacts with lead to produce a water-insoluble compound that cannot leach out to the soil, and which can be recycled.