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A new way to concentrate sunlight could make solar power competitive with fossil fuels.
A new polymer film protects panels from water so they can last for decades.
New solar cells show gains in efficiency.
Thin but efficient solar cells use one-tenth the silicon of conventional cells.
Research shows that silicon can wring two electrons from each photon of incoming light.
Newly observed properties mean graphene could be a highly efficient converter of light to electric power.
A layer of optical fiber bristles doubles the performance of organic solar cells in tests.
A silicon coating could boost the efficiency of solar cells.
Solar cells, camera lenses, and LEDs could benefit from new antireflection coatings.