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IBM researchers have greatly increased the performance of a novel thin film solar cell.
New solar cells show gains in efficiency.
Silicon sheets self-assemble into spheres to capture more light.
Dye-sensitized cells get a double boost from nanowires and optical fiber.
The low-cost cells make their debut on electronics-charging bags.
Cyrus Wadia is using abundant materials to grow nanocrystals for cheaper photovoltaics.
Thin-film silicon solar cells are more efficient with tiny holes in the back electrical contact.
Carbon nanotube photovoltaics can wring twice the charge from light.
New manufacturing techniques could cut solar power costs by 20 percent.
A rolling nanoimprint lithography stamp could be used to print components for displays and solar cells.