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NREL researchers Aaron Ptak, Wondwosen Metaferia, David Guiling and Kevin Schulte are growing aluminum-containing materials for III-V solar cells using HVPE. (Courtesy of National Renewable Energy Laboratory)

NREL researchers Aaron Ptak, Wondwosen Metaferia, David Guiling and Kevin Schulte are growing aluminum-containing materials for III-V solar cells using HVPE. (Courtesy of National Renewable Energy Laboratory)

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