MISIS: Method of ion-beam spraying of electrodes on perovskite solar panels

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2024: Presentation of the method of ion-beam spraying of electrodes on perovskite solar panels

As part of an international team of scientists, NITU MISIS specialists proposed a technique for ion-beam spraying of electrodes on perovskite solar panels. It allows you to obtain a translucent coating of indium-tin oxide with the desired properties without damaging other layers of the panel. Thanks to this, the researchers increased the efficiency from 3.12% - the value characteristic of solar cells after traditional processing - to 12.65%. The university announced this on August 5, 2024.

source = NITU MISIS

In modern industry, indium-tin oxide is used to create new types of solar panels that can not only generate electricity, but also transmit light. It is applied to perovskite solar cells by magnetron sputtering. However, the coating formed in this way has many defects, which leads to an increase in contact resistance and, as a result, a low efficiency of the solar cells. To solve this problem, scientists at NUST MISIS have proposed an alternative approach to spraying electrodes, which consists in using a focused beam of ions, in contrast to the established "bombardment" of particles, for a more controlled transfer of material to the surface of the solar panel. The test results are published in the journal Solar Energy Materials and Solar Cells (Q1).

Our development will help create two types of solar cells - translucent, which can be built into the windows of houses, and tandem. Translucent elements, in addition to generating electricity, are able to transmit visible light. This property will allow architects and designers to embed solar cells into windows, facades and other structures in a variety of ways, - said Lev Luchnikov, engineer of the laboratory of promising solar power at NITU MISIS.

The plus of ion-beam sputtering also lies in the lower cost, whereas other methods of applying indium-tin oxide to solar cells on average require more materials and time to manufacture, which is not practical from the point of view of industrial production.

In the future, we will continue to work on tandem solar cells based on perovskite and silicon. They have a multilayer photovoltaic structure in which two or more photoactive materials are connected in series to use sunlight with greater efficiency by increasing the spectral width of radiation absorption, added Lev Luchnikov.