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In acquiring Innovalight, DuPont will expand its solar business and develop new ways to make solar cells.
Obama’s proposed rules are likely to spur investment in clean energy, but that may not increase jobs in the long term.
A semiconductor material could make solar cells three times as efficient.
Antireflective film helps the cells maintain their yield.
Carbon nanotube photovoltaics can wring twice the charge from light.
New twists on three leading solar technologies.
A new solar laser could be instrumental in the quest to use magnesium as a source of energy.