Nanopillars that Trap More Light - New cheap solar cell design

There are some supply and demand issues with solar cells right now. The technology is evolving rapidly so large scale production is often significantly behind the times, and the new technology is sold at the same price per watt (with the maker pocketing the difference).

Edit for example: http://en.wikipedia.org/wiki/Nanosolar 500 billion in investments and they still can't keep up with demand.