Read past the (admittedly misleading) headline. This article is about double-sided perovskite solar panels, which is apparently just a better material, and maybe it benefits more from the double-sided structure? Not sure of the specifics, but they’re saying efficiency can reach 30%, which is a lot higher than your example.
This is nothing new, bifacial solar panels are on the market for well over a year now…
e.g. https://www.pv-magazine.com/2020/06/08/jolywood-unveils-black-bifacial-module/
Cheap and readily available…
Read past the (admittedly misleading) headline. This article is about double-sided perovskite solar panels, which is apparently just a better material, and maybe it benefits more from the double-sided structure? Not sure of the specifics, but they’re saying efficiency can reach 30%, which is a lot higher than your example.