Scientists from the Russian Federation have proposed a new way to obtain "ribbed" solar panels

Researchers from Lomonosov Moscow State University (MSU) have proposed a new technology that will help improve the efficiency of solar panels.

Scientists experimented with perovskite solar cells. Perovskite is a rare mineral on the Earth's surface, calcium titanate. Since the creation of the first prototype of a perovskite solar cell in 2009, such products have shown a rapid increase in the coefficient of performance (COP): now this value exceeds 25%.

To further increase the efficiency, it is proposed to form a texture on the surface of the light-absorbing layer. This is a structure of alternating protrusions and grooves: due to this, light is efficiently scattered on surface irregularities and is better absorbed, which allows to increase efficiency.

Moscow State University specialists have developed a new technique for creating "ribbed" solar cells. The technology involves the use of methylammonium polyiodides: such compounds are in a liquid state at room temperature and react very intensively with metallic lead. These features make it possible to immediately form a perovskite light-absorbing layer with a given surface microstructure, and not modify it after production, as is done in most cases.

“The approach we have developed is based on the phenomenon of crystal growth in a limited space. To obtain a perovskite layer with a certain surface relief, several drops of reactive polyiodides were applied to the surface of a film of metallic lead and pressed with a stamp with a given relief, ”explain the researchers.

The proposed technology allows not only simplifying, but also accelerating the creation of "ribbed" solar cells. It takes just a few minutes to form a given relief. 

Source: 3dnews.ru