[KarlInOhio]

An addendum to my previous note. If you get some larger lens and focus more light onto it you could get more power than the 0.0046 square meter area would get otherwise. This would make sense if it can handle a more power than direct sunlight gives and if a lens is cheaper than this solar cell is.

[unseen1]

you need to read the article. The guy found a way to split H2O into H2 and O by use of the sun. which means that solar energy can not be stored. And then the H2 and O can be used to power other devices like fuel cells. Or O2 can be used as a fuel.