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Optical antennas could help solar cells produce more energy.
A new design can make more-efficient thin-film solar cells using existing manufacturing equipment.
IBM researchers have greatly increased the performance of a novel thin film solar cell.
Cells absorb sunlight concentrated 1,000 times without cooling.
Government incentives and lower solar prices are starting to pay off.
Antireflective film helps the cells maintain their yield.
Dow Chemical readies easy-to-install solar roofs.
The new cells promise to be cheaper, more efficient, and even printable.