24% is a new world record, the highest efficiency of solar panels created with the help of
Conventional solar panels are based on semiconducting silicon and are now operating at the limit of their efficiency, so it is unlikely that it will be possible to seriously increase it.
Therefore, it is necessary to develop new technologies for solar panels that canThe authors of the new work have combined two alternative absorbent materials.They used organic semiconductors, which are carbon-based compounds that canThey were combined with perovskite, as well as an alloy of lead and halogen.The latter, according to the authors, has excellent semiconductor properties.
Significantly less materials are needed to maintain and scale both technologies than conventional silicon cells, they noteScientists.
At the beginning of the project, the best tandem elements made of perovskite had an efficiency of about 20%.Led by the University of Wuppertal, researchers from Cologne, together with other project partners, were able to increase this value to 24%.
To achieve such high efficiency, it is necessary to minimize losses between materials inside solar cells.To solve this problem, we have developed a special connection that providessmooth transition between an organic subelement cell and a perovskite subelement cell.
Selina Olthof, PhD in the Institute of Physical Chemistry, University of Cologne.
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