For modern solar panels working forthe generation of environmentally friendly, renewable energy, there are two of the most important parameters on which the economic component of the production and use of solar energy depends. This is the durability and energy efficiency of the panels.
The latest solar panels based onperovskite, a rare earth material of calcium titanate (CaTiO3) show high energy production efficiency, but suffer from low durability. The coating quickly collapses under the influence of precipitation, light and oxygen. A team of researchers from the Korea Advanced Institute of Science and Technology (KAIST), Seoul National University and Sejong University were able to increase the strength of perovskite coatings and increase the efficiency of converting light into electricity.
To change the physical and technical parametersperovskite were mixed molecules located in two-dimensional layers consisting of phenethylammonium. Such an operation will make it possible to produce solar panels without an additional protective layer, which automatically affects the economic and energy efficiency of solar power plants.
Korean engineers were able to achieve conservationpanel performance at the level of 80% of the original, after 1000 hours of load. The conversion efficiency coefficient was 20.7%. The addition of silicon made it possible to raise the efficiency to 26.7%, with the existing maximum efficiency for solar batteries - 27.7%.
According to scientists, the use of panels onbased on silicon and perovskite will create the most effective "world-class tandem solar cells." At the same time, the conversion coefficient has significantly increased, which will affect the efficiency of new panels.
Scientists say the need to overcome the 30% milestone of the efficiency of converting solar energy into electricity, which will be quite possible with the further development of tandem solar panels.