World record solar cell with 44.7% efficiency

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Researchers in Germany report a new world record for the conversion of sunlight into electricity using a new solar cell structure with four solar subcells. A new record efficiency of 44.7% was measured at a concentration of 297 suns, indicating that 44.7% of the solar spectrum's energy, from ultraviolet through to the infrared, is converted into electrical energy. The achievement is being hailed as a major step towards reducing the costs of solar electricity.

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