 |
| According to Ivan Zhidkov, this method allows for the quick selection of only promising materials. Photo Credit: Rodion Narudinov |
Physicists at Ural Federal University and their colleagues from the Institute of Problems of Chemical Physics of the Russian Academy of Science (IPCP RAS) have found a way to significantly reduce the thousands of hours required for developing perovskite solar panel technology. Scientists have proposed a method that allows us to determine in a few hours whether solar panels will fail quickly or if the development is promising with a potentially long service life. The test results were published in the journal Physica B: Condensed Matter.
Perovskite films are promising energy converters for various photoelectronic devices, such as solar cells, LEDs, and photodetectors. They have excellent optoelectronic properties and can be grown relatively easily at a low production cost.
The energy conversion efficiency of perovskite solar cells has already exceeded 27% and is still increasing. However, due to structural features, these films are destroyed by light exposure, humidity, temperature, and other factors. Therefore, scientists all over the world are developing methods to protect it from degradation. Testing methods help to understand how effectively these methods are used.
Physicists have proposed using X-ray photoelectron spectroscopy as a method for analyzing the surface layer of materials. This analytical technique allows for accurate determination of elemental composition, chemical state of atoms, and structure of chemical bonds at the surface. The method has applications in various fields, such as materials science, nanotechnology, and industry for analysis of films and coatings.
“The X-ray photoelectron spectroscopy method is widely used for studying perovskite solar cells. It is highly sensitive and allows for the selective analysis of different components, as well as the identification of changes caused by environmental influences. We propose introducing new approaches to this method, focusing on subtle effects that are often overlooked. We aim not only for high-quality and accurate analysis, but also for detailed analysis that takes into account factors that are usually ignored,” said Ivan Zhidkov, Head of the UrFU Laboratory of Photovoltaic Materials.
Thanks to the "subtle" approach, it was possible to reduce the number of tests and the time spent on them by thousands of times - to just four to five hours. According to researchers, this will not only reduce the cost of inspections, but also significantly accelerate the process of creating promising photo absorbers and perovskite solar panels.
This approach of scientists has yielded positive results. The new method has been tested on various samples, and tests have shown its effectiveness.
Title: XPS visualization of soft and hard Lewis base passivation of defects in MAPbI3 perovskite
Authors: Ivan S. Zhidkov, Maxim F. Gerasimov, Victoria V. Ozerova, Lyubov A. Frolova, Marina I. Ustinova, Azat F. Akbulatov, Andrey I. Kukharenko, Pavel A. Troshin, and Ernst Z. Kurmaev
Source/Credit: Ural Federal University | Anastasia Pyankova
Reference Number: ms101425_01
.jpg)
