Holey Solar Panels Let Light Through

Holey Solar Panels Let Light Through
An innovative new method makes opaque solar cells transparent simply by punching holes in them—with no reduction in efficiency.

Typical efforts to create solar cells that can be used as windows or smartphone screens have been stymied by the reddish hue of these transparent cells. As an alternative, the teams from Ulsan National Institute of Science and Korean University turned to crystalline silicon, which is not transparent. However, punching a careful pattern of tiny holes invisible to the human eye in the cells allowed light to shine through while still retaining a 12.2 percent conversion efficiency, which is better than some transparent cells in development.

Holey Solar Panels Let Light Through

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