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01 / 03

Tiny Solar Cell Could Make a Big Difference

NREL scientist Keith Emery examines a Semprius solar module at the laboratory's Outdoor Test Facility. NREL helped Semprius characterize and test its tiny solar cells, which are the diameter of a dot made by a ballpoint pen.

02 / 03

Tiny Solar Cell Could Make a Big Difference

NREL's state-of-the-art testing and characterization instruments scrutinize the quality and efficiency of solar cells, such as on this module made by Semprius.

03 / 03

Tiny Solar Cell Could Make a Big Difference

This solar cell module made by Semprius is being tested at NREL's Outdoor Test Facility.