Heliatek announces 7% efficiency for a transparent solar cell

German manufacturer of high-end solar films Heliatek GmbH announced it has reached a 7% efficiency for an organic transparent solar cell with a 40% light transparency. The company has not said if the results have been confirmed by an independent entity. The company also said that it already holds the world record of 12% cell efficiency for opaque (non-transparent) organic solar cells.

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