GaInP/SHJ tandem solar PV cells with efficiency up to 29.8% under 1-sun standard illumination
NREL and CSEM scientists have jointly set a new world record for converting non-concentrated (1-sun) sunlight into electricity using a dual-junction III-V/Si solar cell. The newly conversion efficiency of 29.8% was set using a top cell made of gallium indium phosphide developed by NREL, and a bottom cell made of crystalline silicon developed by CSEM using silicon heterojunction technology. The two cells were made separately and then stacked by NREL.
“It’s a record within this mechanically stacked category,” said David Young, a senior researcher at NREL. “The performance of the dual-junction device exceeded the theoretical limit of 29.4% for crystalline silicon solar cells.”
“We believe that the si...
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