Normal solar panels do not utilize UV light at all, and only work in the visible spectrum (which also obviously makes it through clouds, as otherwise it would be complete darkness).
While it is more energetic, UV only makes up 4% of sunlight, so going to the extra effort to design a panel to support it wouldn’t make much difference.
Making panels that can utilize UV isn’t impossible, but it makes more sense if the panel is transparent and used in place of a UV filtering, like this:
(Too bad the title is completely misleading).