Cheap, very efficient solar cells?

This is one of those Wired articles that talks about stuff “3 to 4 years in the future” that I am a little doubtful of. Through the Solar Looking Glass talks about translucent solar cells that sit where you would normally have window shades.

Dyson said a single solar cell will cost about 25 cents. The cells are situated about a square foot apart and will have a “way more than 50 percent” energy-conversion rate, she added.