For the first time, physicists were able to observe how poles form and form. The poles? These are rapid decays in the atomic lattice of an object and they appear to be parallel to the motions of the electrons. Decompositions that can explain the performance of perovskites as materials for solar cells.
This is why (USA) decided to mobilize a powerful laser In Free to observe and measure, for the first time, such polarity develops Hybrids . This makes it possible to capture movements that occur in a billion to a second. They succeeded in determining the sizes and shapes of the poles in the Perovskite single crystals and in observing their evolution.
“When you hit an object with light [ici, un . Quickly, they are surrounded by a kind of bubble of local distortion. “ Popular poles that can protect them from scattering , Helps them move more efficiently.optique], Just like what happens in a solar cell, electrons are released and they start to move, Brock Kuselturk, researcher, a
Bigger poles than researchers thought
It is the flexible and smooth structure of the hybrid Perovskite network, which allows the poles to be formed and formed. Observations by researchers at the National Accelerator Laboratory In one . They grow rapidly in all directions until they reach a diameter of about 5 billion meters.These distortions reveal that they begin at the level of a few angstroms – the length of the row
This 50-fold increase in the amount of polarine grows to about ten layersExternally. A few dozen in all . “These distortions reach bigger dimensions than we expected.”, Comments Stanford University Physicist Aaron Lindenberg.
There is still work to be done
Tests conducted by researchers at the SLAC National Accelerator Laboratory directly prove the presence of polarity. “But she has not yet explained how they contribute to the efficiency of the solar cell. There is still work to be done to understand how these processes are affected », The physicist concludes.