[Animats]

From the article: "NREL, the USA’s National Renewable Energy Laboratory, confirmed this world leading 7.6% efficiency in a 1cm2 area CZTS cell this month."

That's deceptive. It's "world leading" for CZTS technology, not for solar cells in general. Commercial solar panels today are delivering about 20% efficiency, and there are research technologies which have demonstrated 44%.[1]

Also, somebody else is claiming 12% for CZTS cells in a lab.[2]

Why are materials science articles from academic PR outlets so fake? We see this all the time with articles on batteries and surface chemistry, called "nanotechnology" for PR purposes. It's embarrassing.

[1] https://en.wikipedia.org/wiki/Solar_cell_efficiency [2] https://en.wikipedia.org/wiki/CZTS