The new solar panels created by scientists from Korea are 27% more efficient and barely wear out. Researchers are confident that the effectiveness of their devices can be increased by another 2-3 times.
Solar panels wear out due to too much light, humidity or low temperature, the researchers noted. Therefore, they developed a new type of solar cell that does not collapse due to environmental influences and is 26.7% more efficient. The results of the study appeared in the journal Science.
Scientists led by a professor at the Korea Institute of Advanced Technology, Bungi Shin, have focused on developing a new class of light-absorbing material – broadband perovskite. It has a crystalline structure, which practically does not react to dangerous environmental factors. Researchers have already made progress in improving the efficiency of perovskite-based solar cells, but are confident that the material has even greater potential.
To achieve higher efficiency, Sin and his team built a two-layer solar cell in which two or more light absorbers are stacked together to make better use of solar energy. To use perovskite in these devices, scientists modified the optical properties of the material, which allows it to absorb a wider range of solar energy.
The development was made possible thanks to an engineering method in which the mixing ratio of molecules forming a two-dimensional layer is carefully controlled. According to preliminary tests, the panel retained 80% of its original ability to convert energy even after a thousand hours of continuous operation.