By analyzing perovskite grain microstructures, the researchers identified concavities that made the material weak and prone to instability.
Researchers at the School of Engineering of the Hong Kong University of Science and Technology have identified the flaw that makes perovskite-based solar panels unstable. By fixing the issue, the researchers have paved the way for large-scale deployment of these highly efficient solar panels.
One reason for the relatively low adoption of solar power is its low efficiency. On average, commercially available solar panels have a power conversion efficiency of 15-20 percent. This means that of all the sunlight incident on a solar panel throughout the day, a typical solar panel can convert no more than 20 percent into electricity.
The relatively easier installation of solar power plants compared to offshore wind farms or the construction of hydropower plants makes a stronger case for the widespread installation of more perovskite-based solar panels. “We were very intrigued by the surface concavities of perovskite grains when we used atomic force microscopy to examine the structural details of perovskite films,” explained Zhou in a statement. These concavities are usually buried underneath the film bottom and easily overlooked.
Environment Perovskite Perovskite Solar Cells
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