A team lead by Kwanyong Seo from the Ulsan National Institute of Science and Technology, South Korea has figured out a way to turn solar panels transparent. The trick is to punch holes into the silicon cells that are 100 micrometres in diameter, around the size of a human hair. This process allows 100 percent of the light through.
This new method has two distinct advantages, the first is the process makes use of crystalline silicon wafers which is very common and found in about 90 percent of solar cells worldwide. The second is, previous transparent cells would give off a red or blue hue when light passed through them, the new method doesn’t have that issue.
In the coming years, Seo and his team hope to increase the efficiency of the cells, as well as, develop a transparent electrode.